Entry Assist User's Guide

3270 Information Display System GA23-0119-03 Entry Assist User's Guide

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3270 Information Display System 3270 Information Display System ga23-oiim3 ^ Entry Assist User's Guide 3174 Licensed Internal Code

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In this document, the term 3174 microcode refers to Licensed Internal Code.

Fourth Edition (March 1990)

This major revision obsoletes and replaces GA23-0119-2.

Changes are made periodically to the Information herein; before using this publication In connection with the operation of IBM systems or equipment, consult your IBM sales representative or the latest IBM System/370, SOxx, and 4300 Processors Bibliography. GC20-0001, for the editions that are applicable and current. Changes or additions to the text and Illustrations are Indicated by a vertical line to the left of the change.

References in this publication to IBM products, programs, or services do not Imply that IBM Intends to make these available In all countries In which IBM operates. Any reference to an IBM program product In this publication Is not Intended to state or Imply that only IBM's program product may be used. Any functionally equivalent program may be used instead.

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© Copyright International Business Machines Corporation 1983,1990. All rights reserved. Note to US Government Users — Documentation related to restricted rights — Use, duplication or disclosure Is subject to restrictions set forth in GSA ADP Schedule Contract with IBM Corp. I Translated Safety Notices

U.S. English You can find translated safety notices in the multilingual safety notice book, GA27-3823. Belgian Dutch De vertaalde veiligheidsinstructies vindt u in het meertalige boekje GA27-3823. Canadian French Vous trouverez les consignee de s6curit6 en franqais dans le manuel multilingue GA27-3823. Danish Oversatte sikkerhedsbestemmelser kan findes i den flersprogede sikkerhedsbog, GA27-3823. Finnish Turvaohjeet ovat myos suomeksi monikielisessa julkaisussa, GA27-3823. French Vous trouverez les consignes de s6curlt6 traduites dans la brochure multilingue Safety Notice Book, GA27-3823. German Obersetzte Sicherheitshinweise sind dem mehrsprachigen Safety Notice Book, IBM Form GA27-3823, zu entnehmen. Italian Le informazioni di sicurezza tradotte si trovano nel manuals: 5394 Unit6 di controllo remota - Informazioni di sicurezza, GA27-3823. Japanese

t:a ^ St(O-e < /■=

GA27-3823. Norwegian Du finner oversatte sikkerhetsmeldinger i den flersprSklige sikkerhetsboken GA27-3823. Portuguese As informapoes de seguranpa traduzidas estao inclufdas no Manual de Indica^des de Seguranpa GA27-3823 (multilingue). Spanish Puede hallar la informacidn sobre seguridad traducida en el manual multilingue correspondiente, GA27-3823. Swedish Svenska oversattningar av de varningstexter som riktar sig till anvandaren finns i det flerspr&kiga dokumentet med nummer GA27-3823.

III The following warning statements (required by country regulatory agencies) are applicable in the countries indicated.

United States

Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.

Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits. Proper cables are available from IBM authorized dealers. IBM is not responsible for any radio or television interference caused by using other than recommended cables or by unauthorized changes or modifications to this equipment. Unauthorized changes or modifications could void the user's authority to operate the equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:(1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

United Kingdom

Warning: This IBM product is made to high Safety standards. It complies inherently with Telecommunications safety standard BS6301. It is not designed to provide protection from excessive voltages appearing externally at its interfaces. Therefore, when this product is connected to a public telecommunications network via any other equipment, and you connect to this product items not supplied by IBM United Kingdom Ltd., you must comply with mandatory telecommunications safety requirements.

You may do this either by choosing products which also are approved as complying to BS6301 or British Telecom Technical Guide No. 26, or by the use of approved safety barriers. Consult the local office of your public telecommunications operator, for advice and permission to make the connections.

Canadian Department of Communications compliance statement This equipment does not exceed Class A limits per radio noise emissions for digital apparatus, set out in f the Radio Interference Regulation of the Canadian Department of Communications. Operation in a residential area may cause unacceptable interference to radio and TV reception requiring the owner or operator to take whatever steps are necessary to correct the interference.

Avis de conformite aux normes du ministdre des Communications du Canada Cet ^quipement ne d^passe pas les limites de Classe A d'^mission de bruits radio^lectriques pour les appareils num§riques, telles que prescrites par le R§glement sur le brouillage radio^lectrique ^tabli par le ministers des Communications du Canada. L'exploitation faite en milieu r6sidentiel peut entrainer le brouillage des receptions radio et t^l6, ce qui obligerait le propri^taire ou l'op6rateur k prendre les dispositions n6cessaires pour en ^liminer les causes.

IV Entry Assist User's Guide ^ , Preface

This pubilcation explains the Entry Assist function of the 3174 and 3274 Control Units. Entry Assist provides conveniences and productivity improvements for display operators who enter and edit text material. This book tells you what the Entry Assist function can do and explains how to use it.

Who Should Read This Book This book is written for anyone using 3270 displays for text-related activity. This includes secretaries, administrative personnel, clerical personnel, executives, managers, planners, engineers, writers, and programmers.

How This Book is Organized Chapter 1, "Overview," gives you a general description of the Entry Assist function.

Chapter 2, "Getting Started," teils you how to make Entry Assist work on your control unit. It also explains how to customize your keyboard.

Chapter 3, "Using the Entry Assist Capabilities," lists the capabilities of Entry Assist and tells you how to use them. The Entry Assist functions are divided into two groups: • Using the Formatting Controls • Using the Cursor and Editing Keys.

Chapter 4, "Using Entry Assist with IBM Host Editors and Other Appiications," explains how to use Entry Assist with some of the IBM host editor programs. You can also find other application hints on those pages.

Chapter 5, "Entry Assist Tutorial," contains an Entry Assist tutorial for self-teaching.

€> Copyright IBM Corp. 1983, 1990 Related Books from the IBM 3174 Library The IBM 3174 library contains information for installing, customizing, operating, maintaining, and programming the data stream for the IBM 3174 Establishment Controller. You may find some of these books helpful if you need to work with the IBM 3174 controller.

To Find Translations of Safety Notices: Safety Notices, GA27-3824

To Organize Library Materials:

Binders and Inserts, SBOF-0089 Binder, 8X23-0331 Inserts, 8X23-0332

To Become Familiar with the 3174:

Master Index, GC30-3515 3174 Introduction, GA27-3850 3270 Information Display System Introduction, GA27-2739

I To Prepare Your Site for the 3174:

I Site Planning, GA23-0213 I Physical Planning Template, GX27-2999

I To Set Up and Operate the 3174:

I Models 1L, 1R, 2R, 3R, 11L, 11R, 12R, and 13R User's Guide, GA23-0337 ! Models 51R, 52R. 53R, 61R, 62R, and 63R User's Guide, GA23-0333 ! Models SIR, 82R, 91R, and 92R User's Guide, GA23-0313

I To Plan for and Customize the 3174:

! Configuration Support A and 8 i Planning Guide, GA27-3844 —, I Utilities Guide, GA27-3853 I Central Site Customizing User's Guide, GA23-0342

I Configuration Support B I Planning Guide, GA27-3862 I Utilities Guide, GA27-3863 i Central Site Customizing User's Guide, GA27-3868 I Asynchronous Emulation Adapter Description and Reference, GA27-3872

VI Entry Assist User's Guide To Install Features or Convert Models on the 3174: Encrypt/Decrypt Adapter Customer Installation and Removal Instructions, I GA23-0262 I Fixed Disk Instaliation and Removal Instructions, GA27-3864 I Diskette Drive Instaliation and Removai Instructions, GA23-0263 j Terminal Multiplexer Adapter Installation and Removai Instructions, GA23-0265 I Modei Conversion Instructions, GA23-0295 I Token-Ring Network Feature instaliation and Removal Instructions, GA23-0329 I Storage Expansion Feature instailation and Removal Instructions, GA23-0330 1 Communication Adapter Installation and Removal Instructions, GA27-3830 i Asynchronous Emuiation Adapter Instailation and Removal Instructions, I GA23-0341 i Concurrent Communication Adapter Installation and Removal Instructions, I GA27-3851

I To Plan for and to Use the Asynchronous Emulation Adapter Feature or i the Multiple Logical Terminals Function:

I Configuration Support A and 8 I Planning Guide, GA27-3844 I Utiiities Guide, GA27-3853 ! Terminai User's Reference for Expanded Functions, GA23-0332

I Configuration Support B _ i Pianning Guide, GA27-3862 1 Utilities Guide, GA27-3863 I Terminai User's Reference for Expanded Functions, GA23-0332 I Asynchronous Emulation Adapter Description and Reference, GA27-3872

i To Perform Problem Determination:

I Customer Problem Determination, GA23-0217 i Status Codes, GA27-3832

To Obtain Data Stream Programming and Reference Information: I Functional Description, GA23-0218 i Data Stream Programmer's Reference, GA23-0059 ! Asynchronous Emulation Adapter Description and Reference, GA27-3872 ■ 3174 Reference Summary, GX27-3872 1 3174 Character Set Reference, GA27-3831 I 3270 Character Set Reference, GA27-2837 ! 3270 X.25 Operation, GA23-0204

! To Perform Maintenance (Service Personnel): j Models 1L, 1R, 2R, 3R, 11L, 11R, 12R, and 13R Maintenance Information, ! SY27-2572 1 Modeis 51R, 52R, 53R,61R, 62R, and 63R Maintenance Information, SY27-2573 i Modeis SIR. 82R, 91R. and 92R Maintenance Information, SY27-2584 ! CE Reference Summary, SX27-3873 I Status Codes, GA27-3832

Preface vii ^ Contents

Chapter 1. Overview 1-1 Entry Assist Capabilities 1-1 Document Mode 1-2 Change Format Mode 1-2 Hardware Supported 1-2 Supporting Software 1-4 IBM Host Editor Programs 1-4

Chapter 2. Getting Started 2-1 How to Make Entry Assist Work 2-1 How to Customize Your Keyboard 2-1

Chapter 3. Using the Entry Assist Capabilities 3-1 Turning On Entry Assist 3-1 Using the Formatting Controls 3-1 The Change Format Key 3-1 Setting the Margins 3-6 Setting Tab Stops 3-7 Setting the Audible End of Line Signal (Set Bell) 3-7 Clearing Tab Stops and Audible End of Line Signals 3-7 Clearing All the Tab Stops 3-7 Changing the Scale Line Origin 3-7 Entry Assist Parameters 3-8 Using the Cursor Movement and Editing Keys 3-9 Using Word Wrap 3-9 Typematic Move Cursor to Next Word 3-10 Typematic Move Cursor to Previous Word 3-11 Delete Word 3-11 Typematic Delete Character 3-11 Enhanced Cursor Tab 3-12 Enhanced Cursor Backtab 3-12 Error-Correcting Backspace 3-12 Enhanced New Line 3-13 Cursor Position Indicator 3-13

Chapter 4. Using Entry Assist with IBM Host Editors and Other Applications . 4-1 Selective Use of Entry Assist Functions 4-1 Using Entry Assist with IBM Host Editors 4-1 System Productivity Facility (SPF) 4-1 Interactive Communications Control Facility (iCCF) 4-2 System Product Editor (XEDIT) 4-2 EDGAR 4-3 Distributed Processing Programming Executive (DPPX) 4-3 Document Composition Facility (DCF) 4-3 I VM Message (VMSG) Facility (Virtual Machine/370) 4-4 Application Hints 4-5 Using Entry Assist to Create and Maintain Source Programs 4-5 Using Entry Assist With Other Programs 4-6 Preparing Simple Memos Without Using DCF 4-6

Chapters. Entry Assist Tutorial 5-1 How to Create the Tutorial 5-1

€> Copyright IBM Corp. 1983,1890 ix I List of Abbreviations X-1

I Glossary X-3

X Entry Assist User's Guide ^ Figures

2-1. Keyboard Layout for Base Keyboards 2-2 2-2. Keyboard Layout for Converged Keyboards in Emulate Mode 2-2 2-3. Keyboard Layout for Converged Keyboards In Native Mode 2-3 2-4. Keyboard Layout for Enhanced Keyboards 2-3 3-1. Change Format Active Keys for Base, Typewriter, APL, and RPQ 8K0932 Keyboards 3-2 3-2. Change Format Active Keys for Converged Keyboards In Emulate Mode 3-2 3-3. Change Format Active Keys for Converged Keyboards In Native Mode 3-3 3-4. Change Format Active Keys for Enhanced Keyboards 3-3 3-5. Change Format RPQ 8K1038 and 8K1158 Keyboards 3-4 3-6. Change Format Active Keys for RPQ 8K0808 Keyboards 3-4 3-7. Entry Assist Scale Line 3-5

> Copyright IBM Corp. 1983, 1990 XI Chapter 1. Overview

The Entry Assist function provides display units with new capabilities for limited local format, entry, and edit control when operating with one of the supported IBM host editors. These editors are listed under "IBM Host Editor Programs" on page 1-4. The Entry Assist function provides conveniences and productivity improvements for 3270 operators in applications involving the entry and editing of text material. For example, you might want to use Entry Assist to edit or enter some of the following material:

• Office correspondence, such as letters, memos, reports, lists, and schedules • Formal publications, such as books, magazines, and brochures

• Source program material, such as COBOL, FORTRAN, and assembler language source program statements • Job control language (JOL) statements

• Other text material normally handled by the listed host editors.

Entry Assist Capabilities The Entry Assist function provides the following capabilities for the operator:

• Display of an "on-demand scale" line for establishing margins, tab stops, and an "end of line" signal position

Establishes line format parameters, providing a visual indication of the position of the parameter on the line. (You can view the scale line only in change format mode.) • Screen margins Automatically confines the body of the input material within the margins.

• Tabbing

Moves the cursor to the next tab stop and replaces unprotected null characters^ with space characters allowing for rapid entry of tabular material.

• Audible "end of line" signal Warns you of the need to perform a new-line operation. • Word wrap (automatic new line) Provides an automatic new-line operation, automatically moving partially typed words to the next line. The word wrap facility allows you to type without considering the need for using new-line operations.

• Word delete

Deletes a word from the current cursor position to the end of the word.

1 A null character is a control character that can be Inserted into or removed from a sequence of characters without affecting the meaning of the sequence: however, the control of equipment or the format may be affected by this character.

Deletes while in insert mode.

On-demand cursor position display Displays the current cursor position in the operator information area in rr/cc form. (The letters "rr" represent the row numbers and the letters "cc" represent the column numbers.)

Rapid cursor positioning Provides rapid cursor positioning, which allows you to: - Move the cursor to the next or previous word with a single keystroke. - Move the cursor to the next or previous tab stop with a single keystroke. Both capabilities are typematic, allowing rapid positioning of the cursor anywhere on the screen.

Document Mode To use the Entry Assist functions, press the Document On/Off(DOC ON OFF) key on the attached keyboard.^ This action establishes "document mode."

Change Format Mode To establish change format mode, press the Change Format(CHG FMT) key. (Press the key again to turn off change format mode.)

When the terminal is in change format mode, you can: • Check the status of margins, tab stops, and audible "end of line" signal positions. • Set margins, tab stops, and audible "end of line" signal.

I Hardware Supported 1 Some terminals have their own version of Entry Assist. Refer to your own terminal I documentation for additional information.

I For a list of terminals that the 3174 provides Entry Assist support for, refer to the I 3174 Introduction (GA27-3850). The 3174 Introduction does not list this capability; I however, any 80-column CUT display listed in the Introduction can use the 3174 I version of Entry Assist.

2 A typematic key repeats its function when pressed and held down. I 3 For converged and enhanced keyboards in "native mode," you must first place the unit in extended-select mode by pressing the EX SEL key.

1-2 Entry Assist User's Guide I Keyboards r I The Entry Assist function is supported on typewriter, APL, and RPQ 8K1038 I keyboard layouts. Entry Assist Is also supported on converged data entry I keyboards and on RPQ 8K0808, 8K0932, and 8K1158 keyboards. Some keyboard keytops need to be replaced with new keytops or relabeled with stick-on labels to identify the unique Entry Assist capabilities. (See Chapter 2, "Getting Started," for installation instructions.)

I You can purchase an Entry Assist Keytop Replacement Accessory Kit for some I keyboards. The Accessory Kit contains eight sets of five replacement keytops and a keytop extractor tool. Ask your IBM Sales Representative for information about how to order the Accessory Kit.

I Audible Alarm I The terminal must have an "audible alarm" in order to obtain the audible "end of I line" signal function.

1*^

Chapter 1. Overview 1-3 Supporting Software ^

IBM Host Editor Programs You can use the Entry Assist function alone or with the full-screen IBM host editor programs listed below. Refer to the List of Abbreviations at the end of this book for an explanation of the abbreviations.

Interactive Systems Editor Programs • Under VM/SP (5749-010 VM/370, Release 6 and beyond) - PROFS PRPQ Editor - XEDIT - SPF, ISPF/PDF (edit functions) • Under VM/370 (5749-010 VM/370) - SPF, ISPF/PDF (edit functions) - Display Editing System (lUP 5796-PJP) • Under DOS VSE/ICCF ' - ICCF Editor • UnderTSO - SPF, ISPF/PDF (edit functions)

DBDC Systems Editor Programs

• Under CICS/VS - IPDT VSE (edit functions) - IPDT OS/VS (edit functions) • Under IMS/VS ^ ^ - IPDT OS/VS (edit functions)

8100 Systems Editor Programs

• DPPX Editor

1-4 Entry Assist User's Guide ^ Chapter 2. Getting Started

This chapter explains how to make Entry Assist work on your control unit. It also explains how to customize your keyboard.

How to Make Entry Assist Work

On a 3174 Control Unit: You do not need to do anything special to make Entry Assist work. The Entry Assist function works automatically and requires no control unit customizing.

On a 3274 Control Unit: You can find the procedure for making the Entry Assist function work on a 3274 Control Unit in the IBM 3270 Information Display System: 3274 Control Unit Customizing Guide.

How to Customize Your Keyboard To customize your keyboard for the Entry Assist function, do the following: 1. Apply the stick-on labels (32 sets of six labels, which must be ordered separately) to the keyboards, or use replacement keytops (which can be ordered) on some keyboards. 2. Refer to Figure 2-1 on page 2-2, Figure 2-2 on page 2-2, Figure 2-3 on page 2-3, and Figure 2-4 on page 2-3. Choose the figure that matches the keyboard you have and look at the bold-outlined blocks to see how to apply the stick-on labels. Stick-on labels must be ordered separately. 3. Wash each keytop with soap and water and allow it to dry thoroughly before you apply the labels. 4. Peel each keytop label off the label form with a sharp-pointed knife (or a similar device); then position the label on the keytop.

5. Press the label down with a fingertip.

If your display has removable keytops, you may be able to order an Accessory Kit, which contains eight sets of five replacement keytops engraved for use with Entry Assist, a keytop extractor tool, and Keytop Replacement Instructions. (See "Keyboards" on page 1-3.)

If you use the RPQ 8K1038, 8K0808, 8K0932, or 8K1158 keyboard with a 3174 control unit, you need to customize the control unit to support your keyboard. If you use the RPQ 8K1038, 8K0808, 8K0932, or 8K1158 keyboard with a 3274 control unit, the RPQ corresponding to that keyboard must be installed. Ask your system administrator for assistance if necessary.

> Copyright IBM Corp. 1983, 1990 2-1 RPQ 8K1038 and RPO 8K1158 Kayboords (Sea Note 2.) Error Correcting Backspace

Enhanced Cursor Enhanced Backtab Cursor Tab

Change Format Mode Toggle BBC?' Delete Entry Assist DOC (Doc) Mode ON OFF Word Toggle Cursor CRPOS Position ndicator

Word Wrap Typematic Move Toggle —00 Cursor To Next Word

Typematic Move Enhanced Cursor To Previous New Line Word

Notes: DOC Typematic Delete Character ON OFF 1. Boxed items, for example, 1 1 , ore stick-on labels. 2. RPQ 8K1038 end RPQ 8K1158 keyboords. The CHG FMT function moves to the key indicoted. The other Entry Assist functions remain as shown.

Figure 2-1. Keyboard Layout for Base Keyboards

Enhanced Cursor Backtab QBaQBaSBQQQQ Error Correcting Backspace BBBBBBBBBBBB Typematic y Delete

a• * Characteruiiaiai^ivr Deleteueit Word

Change Format CHC BBWQQSSSaBBBBB! fi BBBB Mode Toggle FMT ^B BBBBBBBBBBBBB MBBB Entry Assist. (Doc) Mode Toggle B QBBBBBBBBBBBB s—flaaai

Word Wrap IB BBBBBBBBBBBBF BBB Toggle BBQ B

Typematic Move Cursor Typematic Move Cursor Enhanced New Line' to Previous Word to Next Word DOC ON OFF Note: Boxed items, for exomple, , ore stick-on labels.

Figure 2-2. Keyboard Layout for Converged Keyboards in Emulate Mode

2-2 Entry Assist User's Guide Change Entry Assist Word Format Cursor (DOC) Mode Wrap Mode Position To get these (unctions, press the ExSel key Toggle indicator followed by the indicated keystroke. DOC jcR POsj ON OFF \nmnan m

BBBQSQBaaaQa Error Correcting Enhanced Backspace . Enhanced Cursor Backtab Cursor Tab aaaaaaaaaaaa ^ Typematic Delete Character aaaaaaaaaaaaf H BBSS aaaaaaaaaaaa RH RHHB aa/ Delete Word aa aaaaaaaaaaaaa a aaaa aa saaaaaaaaaaar aaaaan aa 0 0f 30 /e Typematic Move Cursor to Enhanced New Line Typematic Move Cursor Next Word

DOC to Previous Word ON OFF Note: Boxed items, for example. , ore stick-on labels.

Figure 2-3. Keyboard Layout for Converged Keyboards In Native Mode

Entry Assist Word Change Cursor To get these functions, press the ExSel (DOC) Mode Wrap Format Mode Position key followed by the indicated keystroke. Toggle Toggle Toggle Indicator

WRAP CR PCS

uIB □ Error Correcting Typematic Delete Backspace / Character 'ExSel ■—T "/ "

\ J y /

■L Enhanced Cursor Tab "~f ■■ j _i _ Enhanced' Cursor Backtab 1 u

Delete Word Enhanced Typematic Move Cursor New Line to Next Word

000 ON OFF Typematic Move Cursor are stick-on labels. r\ Note: Boxed items, for example, to Previous Word

Figure 2-4. Keyboard Layout for Enhanced Keyboards

Chapter 2. Getting Started 2-3 ^ Chapter 3. Using the Entry Assist Capabilities

This chapter lists the Entry Assist capabilities and tells you how to use them.

Turning On Entry Assist The DOC ON OFF key turns all the Entry Assist functions on and off.i

I When you first turn on the power to a display unit after the control unit (3174) has I been powered on or restarted, the Entry Assist functions are turned off.

j To turn on the Entry Assist functions, press the DOC ON OFF key. This puts the display in "document mode" and causes either the DOC or the D-> symbol to be displayed in the operator information area (column positions 66-68).

If you have Entry Assist on when you turn the power off your display unit, Entry I Assist is still in effect when power comes back on with Configuration Support B i Release 2 or later code. Prior to Release 82, the Entry Assist function is always off whenever a display unit is powered on. Ask your system administrator which configuration your control unit is using. If the controller is restarted, then you need , to turn Entry Assist on.

The D-> symbol is displayed when both "document mode" and enhanced null/space processing mode^ are active. The DOC symbol is displayed when only I "document mode" is active.

To turn off the Entry Assist functions, press the DOC ON OFF key while in document mode. This also clears the DOC symbol (or restores the if enhanced ! null/space processing mode is active).

Using the Formatting Controls This section lists the formatting controls and explains how to use them.

The Change Format Key To put your display in change format mode: 1. If you have not entered your display into "document mode," do so at this time. 2. Then press the Change Format(CHG FMT) key. This action places the display in "change format" mode. You can use the keyboard controls to set and clear margins, tabs, and the audible "end of line" signal only when the display is in change format mode. If an invalid keystroke is pressed, it may be necessary to press the reset key before further keystrokes will be accepted. Use the change format active keys shown in Figures 3-1 through 3-6 on the following pages.

' When you are working with Converged or Enhanced keyboards In native mode, first place the unit In extended-select mode. 2 Enhanced null/space processing mode Is available on 3174 Configuration Support B Release 2 and later.

Clear Al Tab Stopi 30000 '^^00000000000000y\ Clear Tab and/or 000000000000

Typematic Set Right Margin > Move Cursor Set Left Margin < 0 to Next Word

Typematic Move Cursor to Previous Word Note: Keytops and foces shown In bold outline ore octlve; oil others ore ignored.

Figure 3-1. Change Format Active Keys for Base, Typewriter, APL, and RPQ 8K0932 Keyboards

BBBSQBQQQQSfl—-< BBBBBBBBBBBB T ^Sot Tab stops ,* Set Bell /aod/orBoltClear Tab Stop " BB BBBBBBBBraBBB BBB BBBB IBBBBBBBBBBBB BB0 HHBH IBBBBBBBBBBBB a BBBB BBBBBBBBBBBf BBB

lESET \ I Set Left Margin > Set Right Margin < Typematic Typematic Move Cursor Move Cursor to Previous Word to Next Word Note: Keytops ond foces shown in bold outline ore active;oil others ore ignored.

Figure 3-2. Change Format Active Keys for Converged Keyboards in Emuiate Mode

3-2 Entry Assist User's Guide ooc CKG —jq gg( these (unctions, press t(ie ExSel Key followed by the indicated keystroke

nnHHHHRRHHflfl-a. Cfeor AI( Ciear Tab Stop and/or Beit Tabj Stops. ■ Set Tab Stops /"Set Bell ^

CURSR SEL \/SB 1( 1 tanRnnnnp(PRnni=i bb4 brbh BBBBBBBaaflBBan BBS BBBB ^BBBBBBBBBBBay B aBBB gMraQQQBBBBBS aaan \ [Bii \mp 9\\Ba

Set Right Margin > alt Set Left Margin < Typematic Typematic Move Cursor Move Cursor to Previous Word to Next Word Note: Keytops and foces shown in boid outiine ore active; oii others ore ignored.

Figure 3-3. Change Format Active Keys for Converged Keyboards in Native Mode

To get these functions, press the ExSei ON OFF key followed by the indicated keystroke.

ExSel Clear All Tab Stops

Clear Tab Stop Cursor Alternate Set Tab Stops 'Set Bell and/or Bell Select Cursor

RESET ALT < Set Left > Set Right ALT Margin Margin Typematic Typematic Move Cursor Move Cursor to Previous Word to Next Word

Note: Keytops end faces shown in bold outline ore octive; oil others ore ignored.

Figure 3-4. Change Format Active Keys for Enhanced Keyboards

Chapter 3. Using the Entry Assist Capabilities 3-3 CleorAll Tob Stop* * Set Bell —►! Set Tab Stops / Change rormot /

"•"'•^^dlQnQQQQQQQaQQCZII J V iI I /I I V JI j1 JI iI J ^ . JI I IQQ JI J / e^Cteor Tob Stopi Cursor and / or betl Select ON OFF 00BB 0

il J CURSR ]0

Typematic Move - ^ Cursor To Next Word Set Rigtit Margin > , ■ ■ Set Left Margin < 1J

Typematic Move Cursor To Previous Nota: Word Keytops and foces shown in bold outline ore active; oil others ere ignored.

Figure 3-5. Change Format RPQ 8K1038 and 8K1158 Keyboards

Clear AM Tab Stops * Set Bell

Cursor Cleor Tob Stops Select end / or bell

ChORoe Forfnat Mode

DOG ON OFF 000000S0BB 00-»

CURSR 000000000000

Typematic Move Cursor To Next Word Set Right Margin Set Left Margin

Typematic Move Cursor To Previous Word

Nota: Keytops and faces shown in bold outline are active; all others ore ignored.

Figure 3-6. Change Format Active Keys for RPQ 8K0808 Keyboards

3-4 Entry Assist User's Guide The Scale Line Placing your display in change format mode causes the scale line to appear in the operator information area. The operator information area Is the bottom row on the

screen.

A scale line cursor column indicates the current cursor position. The normal cursor in the entry area is replaced with a reverse-image cursor.

Look at Figure 3-7 for an illustration of the Entry Assist scale line.

Lost Screen Column -i r- First Screen Column I

Left Tab End-of-Line Right i Margin Stop Signal (Bell) "1 |~ Margin j U Position i i 1 .+ 1-.<- + 2 — +- —3— + 4—+ 5 + ■ 6- 7—+-

j Right Left Entry Margin Margin- Area Area Area

Figure 3-7. Entry Assist Scale Line

The Scale Line Cursor The scale line cursor is either a reverse-image cursor or an opaque box, depending on the type of display unit you have. When you set margins, tab stops, or the audible "end of line" signal, the scale line cursor disappears and you immediately see the character that you entered. Moving the cursor or pressing the Alternate Cursor(ALT CURSR) key will cause the cursor scale to be displayed.

The Normal Cursor The normal cursor and the scale line cursor move together in a horizontal direction. The normal cursor moves independently in a vertical direction. If you look at the normal cursor and the scale line cursor, you can see the relationship of a position on the scale line with a position on the page.

Note: You can use the "Move Cursor to Next Word" and "Move Cursor to Previous Word" keys for rapid positioning of the cursor while in change format mode. (See "Typematic Move Cursor to Next Word" on page 3-10, and "Typematic Move Cursor to Previous Word" on page 3-11.)

Reset Change Format Mode Press the Change Format key again to reset the change format mode, erase the scale line, and return the operator information area to its previous function.

The cursor returns to the cursor display mode and to the screen position it occupied before you entered the change format mode. The new margins, tabs, and audible "end of line" signal are now operational and remain in effect until they are changed or until the power to the controller is turned off.

Chapter 3. Using the Entry Assist Capabilities 3-5 Setting the Margins If you want a standard margin, use the following procedures to set margins: f 1. Move the cursor (using the Cursor Left and Cursor Right keys) to the desired locations on the column. 2. Press the Less Than (<) key for the left margin. The column defined as the left margin is included in the entry area. 3. Press the Greater Than (>) key for the right margin. The column defined as the right margin is NOT included in the entry area.

These actions define the area for data entry.

You can set only one left and one right margin for a dispiay. When you press the Less Than key, the new ieft margin replaces the previous one. Any tab stop or audible "end of line" signal setting to the left of the new left margin still exists and ^ remains operational. f y

To replace the right margin with the new one, press the Greater Than key. Any tab stop or audible "end of line" signal setting to the right of the new right margin still exists and remains operational.

If a right margin existed to the left of, or In the same place as, the new left margin, the right margin resets to the default position. The default position Is column 80. The scale line Is updated accordingly.

If a left margin existed to the right of, or In the same place as, the new right margin, the left margin resets to the default position (first scale line position).

If you try to enter a right margin In the left margin default position, the Input Is Ignored. Likewise, If you try to enter a left margin In the right margin position, that Input Is also Ignored. Note: On a 3180 Model 1 with extended function (such as scrolling). If the window width Is less than the 80-column maximum width for Entry Assist, left and right square brackets ([ ]) indicate the window edges.

You can set an alternative right margin If you want to. The Greater Than symbol (>)Indicates the standard right margin. When your display Is In document mode with word wrap off, the standard right margin causes Input to be Inhibited when you try to enter a character at the right margin position.

The alternative right margin symbol signifies that an automatic margin release occurs at the right margin when word wrap Is off. This Is useful In certain power typing situations.

To establish an alternative right margin: 1. Position the cursor on the right margin symbol. 2. Press the Cursor Select key.

Press the Cursor Select key again to establish the standard margin symbol and _ operation. A broken vertical bar (j) replaces the standard right margin symbol.

3-6 Entry Assist User's Guide Setting Tab Stops To set tab stops:

1. Position the cursor in the desired column on the scale line. 2. Press the Forward Tab key.

The scale line is updated to show the new tab stops. Note: The underscore symbol in the scale line indicates a tab stop; however, the underscore symbol is not displayed if either a margin or the "end of line" signal is also set at that location.

You can set a maximum of 20 tab stops. If you try to set more than 20 tabs, the input is ignored.

Setting the Audible End of Line Signal (Set Beii) To set the "end of line" signal:

1. Position the cursor in the desired column. 2. Press the Asterisk (*) key.

I An asterisk symbol appears in the column position that you chose.

You can set the "end of line" signal at any column, including margin and tab stop positions. This causes the audible alarm to sound as the cursor enters that column position. I Note: To use the "end of line" signal, your display unit must have the audible I alarm.

Clearing Tab Stops and Audible End of Line Signals To clear a tab stop or the audible "end of line" signal setting: 1. Position the cursor at the tab stop or at the "end of line" signal setting. 2. Press the Delete Character key.

If both a tab stop and the "end of line" signal are set in the same position, both are cleared.

Clearing Ail the Tab Stops To clear all the tab stops:

Press the CLEAR key.

The scale line is updated accordingly.

Changing the Scale Line Origin To change the scale line origin: 1. Place the cursor at the first scale line position. 2. Press the Cursor Select key.

I The origin changes from 0 to 1, or from 1 to 0. Only the scale line numbering I changes; the margins, tabs, and "end of line" signal position do not change.

Chapter 3. Using the Entry Assist Capabilities 3-7 Entry Assist Parameters The following Entry Assist parameters remain in effect during entry to and exit from document mode unless you change them or if the 3174 is restarted. Margin settings and types Tab stop settings Audible line-ending signal position Word wrap status Scale line origin.

In addition, APL mode and insert mode states remain in effect during entry to and exit from change format mode. f.

3-8 Entry Assist User's Guide ^ Using the Cursor Movement and Editing Keys This section explains how to move the cursor and use the editing keys.

The following functions, which provide flexibility during text entry and edit operations, are available in document mode. j Using Word Wrap To turn word wrap on or off, press the WRAP key.

Word wrap is a function that automatically moves the last word on a row to the next ^ row if the word would otherwise overrun the right margin.

I Word wrap is automatically turned on the first time that document mode is ^ I established. If you turn word wrap off, the next time you use document mode word I wrap will be off. A word wrap symbol ({}) appears in column 70 of the operator r information area when word wrap is operational.

Word Wrap with insert Mode Off I A wrap can occur if the entry area of the next row contains only nulls and spaces I between the left margin and the first field attribute character.® If there are no field I attribute characters in the entry area of the next row, or if your control unit is using I code prior to 3174 Configuration Support B Release 2, the entire entry area of the I next row must contain nulls and spaces. Ask your system administrator if your I system is using Configuration Support B Release 2 or an earlier version.

You can wrap a word of any length less than the total space between the margins (or left margin and field attribute) exclusive of the margins and attribute. Space characters are placed in the position formerly occupied by the wrapped word.

Word wrap obeys margin boundaries. If you enter any character other than DUP or space into the column position immediately left of the right margin on the current row, the entire word is placed on the next row, beginning at the left margin.

I You will see the Too Much symbol (X >) in the operator information area if one I of the following is true: 1 • If the word occupies an entire row i • If the word does not fit between the left margin and first field attribute on the I next row I • If the current row is the bottom row I • If the field in the next line is protected.

I If the left margin is within an unprotected field on the screen, the nulls to the left of I the left margin within that field change to spaces. This makes the document look just like you see it on the screen after you send it to the host in a read-modified operation.

3 A field attribute character, associated with a field In a display file, defines how the field Is displayed (for example, whether It Is underlined, blinking, or Intensified).

Chapter 3. Using the Entry Assist Capabilities 3-9 If you enter a space character Into the column position Immediately left of the right margin position, word wrap does not occur. The cursor moves to the left margin of the next row.

If the cursor Is In the column position Immediately to the left of the right margin and you press the DUP key, the DUP character Is placed In the right margin, and the DUP function Is performed as defined when not In document mode.

Note: If you use word wrap with the 3180 Model 1 extended functions, the window Is automatically scrolled when the last line In the window Is filled.

Word Wrap with Insert Mode On When a display has both insert mode on and word wrap on, a normal Insert operation occurs whenever there are either ending space characters (see note) or a null character between the cursor and the right margin. Otherwise, the display tries to wrap the word to the Input area of the next row.

Word wrap behaves differently depending on whether or not your system Is using Configuration Support B Release 2. If you are not certain what configuration your system uses, see your system administrator.

A word wraps to the Input area of the next row only If there are enough ending nulls or space characters (see note) to accommodate the wrap. On a control unit prior to Configuration Support B Release 2, word wrap does not occur If there are any field attributes In the entry area of the next row. On a 3174 with Configuration Support B Release 2 or later, word wrap occurs whenever there are enough ending nulls or space characters within the first field of the next row's Input area to accommodate the wrap.

Space characters appear In the position formerly occupied by the wrapped word. If the left margin position of the next row did not contain a space character prior to the wrap, a space character Is wrapped with (or Is appended to) the word being wrapped In order to preserve word separation.

If there Is not enough room for the wrap to occur. Input Is Inhibited and the Too Much symbol (X X >) appears In the operator information area. Note: A space character ('40'x) Immediately preceding the right margin position Implies that a word has been entered In the right margin area. To maintain separation of words between the entry area and the right margin, the character Insert operation does not always allow a graphic character to overwrite a space character (or to overwrite a null character, If enhanced null/space processing mode Is active) In the last position of the entry area. A graphic character In the last position will be overwritten only If the right margin position contains a field attribute, a null or a space - which serves as a separator between the entry area and the right margin.

Typematic Move Cursor to Next Word To move the cursor to the first character of the next word, press the Cursor Right key In ALT Shift.

if the cursor Is within the last word on a line within margins, the cursor moves to the first null or blank after that word. The final cursor location must be In an unprotected field.

Margin limits are not observed In the following circumstances:

3-10 Entry Assist User's Guide • If a word is outside the current margin settings, the cursor moves under that word. • If the cursor is outside the margins, the cursor moves to the beginning of the next word, whether that word is within the margins or outside the margins. I • If there are no more words on the current row, the cursor moves to the beginning of the first word on the next row.

The Typematic Move Cursor to Next Word function wraps the cursor from the lower right to the upper left of the screen.

Typematic Move Cursor to Previous Word To move the cursor to the previous word, press the Cursor Left key in ALT Shift. I When you do this:

• The cursor moves to the first character of the current word. • If the cursor is at the first position of the current word, or if it is not positioned under a word, the cursor moves to the first location of the previous word.

The Typematic Move Cursor to Previous Word function wraps the cursor from the upper left to the lower right of the screen.

Delete Word Press the Delete Word key to delete a word. This deletes the remainder of the word from and including the cursor position. When you delete a word: I • The words following the deleted word (to the end of the row or to the first attribute character'^) shift left to close the gap. • The deletion includes the punctuation and the space or the null (if any) following the word. I • For a partial word delete, any following null or space is not deleted.

I • The cursor remains at its current location. • Attributes and the characters to the right of them do not shift. • Subsequent rows do not shift.

• If the cursor is located under a null or a space, the null or the space is deleted. • If the cursor is under an attribute, or if the cursor is in a protected field, input is I inhibited and the Go Elsewhere symbol appears in the operator I information area.

Typematic Delete Character I The Typematic Delete Character key causes a delete function identical to the I delete key except that this key is typematic. Its position varies depending on what I keyboard you use. Refer to Figures 2-1 through 2-4 to see which keyboard you are I using and to locate the Typematic Delete Character key.

I Note: The Typematic Delete Character function is not available on devices I attached to a 3174 unit that is customized for the New Spanish language.

* An attribute character, associated with a field In a display file, defines how the field Is displayed (for example, whether It Is underlined, blinking, or Intensified).

Chapter 3. Using the Entry Assist Capabilities 3-11 Enhanced Cursor Tab When you press the Tab key, the cursor moves to the next unprotected tab stop, replacing unprotected null characters with space characters.^ If there are no intervening tab stops, the cursor moves to the next unprotected field. Null characters are not changed to space characters when there are no intervening tab stops.

The Enhanced Cursor Tab function does not wrap the cursor from the lower right to the upper left of the screen. I Note: The Tab key operates differently depending on whether or not document I mode is on. ! • In document mode with tab stops set, the Tab key can insert data (space I characters) into the data stream sent to the host program. This insertion is necessary to preserve the tabular formatting that appears on the screen.

• If no tab stops are set, the Tab key operates in the same manner regardless of whether document mode is on or off, except that it does not wrap the screen.

Enhanced Cursor Backtab The Enhanced Cursor Backtab function moves the cursor to the previous tab stop or to the first unprotected character location of the current or previous field, I whichever is closer. Nulls do not change to spaces during the move.

The Enhanced Cursor Backtab function does not wrap the cursor from the upper left to the lower right of the screen.

Error-Correcting Backspace Press the Backspace key to delete the character to the left of the cursor position. Your display must be in insert mode.

If the cursor is at the left margin position, you cannot backspace.

I All characters to the right of the deleted character on the same row within the I same field shift to the left to close the gap, regardless of the right margin setting.

I Attributes and characters to the right of the shifted characters do not change.

If the cursor is at the left margin when you press the Backspace key, input is I inhibited and the Input Inhibited and Go Elsewhere symbols appear in the I operator information area.

The Error-Correcting Backspace function does not wrap the cursor from the upper left to the lower right of the screen.

I 5 If enhanced null/space processing mode is not active, the nulls are replaced with space characters Immediately I upon receipt of the tab keystroke. If enhanced null/space processing mode Is active, however, the nulls are not I replaced Immediately, but are eventually replaced If the field is modified and there are graphic characters I between the tab stop and the end of the field.

3-12 Entry Assist User's Guide Enhanced New Line Press the New Line key to move the cursor to a new line. The New Line key observes the left margin and moves the cursor to the left margin of the next row.

If the left margin is protected, the cursor moves to the first unprotected position to the right of the left margin within the entry areas.

Unprotected null characters on the new line (from the position to the left of the left I margin, and within the same field as the cursor) change to spaces.®

The cursor wraps the screen. If the cursor is on the last row of the display, it moves to the first unprotected location of the first row (within the margins).

If the entire screen within the margins is protected, the cursor moves to the left margin of the first screen row.

Cursor Position Indicator Press the Cursor Position Indicator key(CR PCS)to see an exact cursor location. The current position of the cursor is displayed in columns 75 through 80 of the operator information area as row and column (rr/cc) data. Row data has a value between 1 and 43, and column data has a value between 1 and 80.

The indicator is reset when you press another key (or release the ALT key) or when the keyboard is locked because of host transaction. I Note: The Cursor Position Indicator key has no effect on devices that always have I a cursor position.

I 6 If enhanced null/space processing mode Is not active, space characters replace the nulls Immediately upon receipt I of the newllne keystroke. If enhanced null/space processing mode Is active, however, the nulls are not replaced I Immediately, but are eventually replaced If the field Is modified and there are graphic characters between the left I margin and the end of the field.

Chapters. Using the Entry Assist Capabilities 3-13 Chapter 4. Using Entry Assist with iBM Host Editors and Other Appiications

The Entry Assist function is easy to enter and exit. If you are an occasional user, I remember that you need only press the Document Mode key to turn Entry Assist on I and off.

Selective Use of Entry Assist Functions You can use the Entry Assist capabilities selectively. Even if you are not working with one of the IBM host editors, you may still find it useful to operate with document mode on and use some of the Entry Assist capabilities.

Operating in document mode is similar to operating in non-document mode if the parameters are set in a certain way. For example, if default margins are set at columns 1 and 80, word wrap is off, and no tab stops are set, the following functions are still available:

• Move cursor by word • Cursor position indicator • Delete word • Typematic delete character • Line ending warning signal • Backspace delete while in insert mode.

Using Entry Assist with IBM Host Editors When using a full-screen editor that has a line command field, set the margins to prevent inadvertent entry of data into the line command field.

• If the line command field is to the left, set the left margin in the first entry position to the right of the command field. • If the line command field is to the right, set the right margin just to the left of the command field. Most of the time, the editor you are using indicates the data entry area.

1 When document mode is on and tab stops are set, the tab key may cause space I characters to replace null characters as the cursor moves to a tab stop. (See I "Enhanced Cursor Tab" on page 3-12.) This action preserves formatting information in the data stream. Set tab stops only in those situations where the host program can handle the space characters.

System Productivity Faciiity (SPF) When using SPF edit functions, set the left margin to correspond to the entry area. To set the left margin, press the Change Format key and move the cursor to the beginning of the typing area. The scale line cursor is automatically in the same column position, and you can immediately set the left margin at this position.

Set the right margin in the right column position.

© Copyright IBM Corp. 1983,1990 4-1 with the margins set this way, you can avoid the SPF line command columns during normal entry and edit of text material. Use the Backtab key or the Previous Word key to move the cursor rapidly to the line command field.

Entry Assist is not Intended for use with the SPF text entry mode. However, If you use SPF, you may find It convenient to use Entry Assist document mode rather than the SPF text entry mode.

Entry Assist document mode, with word wrap on, allows you to enter data while providing additional entry and editing conveniences. Also, with Entry Asslst's word wrap function, you can get faster host response.

To use the SPF text entry mode, turn off Entry Assist document mode while In SPF text entry mode.

To edit a document entered In text entry mode, turn on document mode.

Interactive Communications Control Facility (iCCF) I When using ICCF, set the left margin at column 2. The ICCF editor positions the I cursor In this column. When you press the Change Format key, the cursor appears on the scale line In the same column. Now you can set the left margin Immediately.

I When you are in document mode, the Tab key may cause space characters to be I entered from the current cursor position to the next tab stop on the line. (See I "Enhanced Cursor Tab" on page 3-12.) If tab stops are set and you use the Tab key to move the cursor from the ICCF command line to the Input area, spaces may be placed In the command field. The ICCF editor Interprets spaces In the command field as an Illegal command. You can avoid this situation by using the New Line key or by setting tab stops only when needed.

System Product Editor (XEDiT) The XEDIT entry area Is clearly Indicated on the screen. Position the cursor at the first entry column and press the Change Format key. The cursor appears on the I scale line In the same column. You can now set the left margin.

Entry Assist Is not Intended for use with the XEDIT power typing mode. If you use power typing mode, you must turn off document mode while entering original text. You can still use Entry Assist to edit a document later.

You may find It convenient to use Entry Assist document mode rather than the XEDIT power typing mode for the following reasons: 1 • Entry Assist provides the same entry capability as power typing. I • Entry Assist allows you to view the document In the same form In which It will I be formatted. 1 • Entry Asslst's tabbing capabilities are superior to the Program Function keys' I tabbing capabilities.

I When the prefix area of your screen Is on the right, you can make your Input screen look like your edit screen:

1. Set the XEDIT scale line on If It Is not displayed. 2. Set the left margin at position 0 on the scale line. 3. Set the right margin at position 73 or less.

4-2 Entry Assist User's Guide 4. Use the INPUT command to enter your text.

If the prefix area of your screen Is on the left, you can make your input screen look like your edit screen:

1. Set the XEDIT scale line ON if it is not displayed. 2. Set the left margin at position 7 (just to the right of the prefix area). 3. Set the right margin at position 80 or less. 4. Use the INPUT command to enter your text.

EDGAR If you use EDGAR and are entering files to be formatted by DCF, set the left margin to column 1. Setting the left margin to column 1 makes DCF formatting commands appear in the expected positions.

Set the right margin just before the command field so you can avoid the command field when you input data. Use the Tab key to move the cursor to the command field.

Distributed Processing Programming Executive (DPPX) When using Entry Assist with the DPPX editor:

• Do not use the Format subcommand. Use the default format. • Do not use the tab local-line function. Use the Entry Assist tab function.

Document Composition Faciiity(DCF) The document composition facility (DCF) program operates on an input data set that contains both subject matter and formatting controls. A DCF run produces a document with the subject matter formatted as specified by the formatting controls. You can change the formatting controls in the data set without changing the subject matter, and another DCF run results in the same subject matter formatted according to the new format controls.

When you format a document using Entry Assist formatting controls, you cannot reformat it at a later time by changing an Entry Assist format control.

From the DCF viewpoint. Entry Assist offers the following functions:

• It helps you create and edit the input data set • It provides limited formatting for margins and tabbing.

DCF requires that formatting commands appear in specific column locations. When you enter a DCF document, you must set the left margin for Entry Assist appropriately. For example: • When using EDGAR, set the left margin in column 1. • When using SPF, set the left margin in column 9.

If you want your printed memos to appear as they do on the screen, set the DCF line length so that it is equal to the space between margins.

Chapter 4. Using Entry Assist with IBM Host Editors and Other Applications 4-3 VM Message(VMSG) Facility (Virtuai Machine/370) When using VMSG, set the left margin at column 2. Since the VMSG editor initially ' ^ sets the cursor at column 2, press the Change Format key to set the left margin immediately.

4-4 Entry Assist User's Guide Application Hints You can use Entry Assist to create and maintain source and other programs, or to prepare simple memos.

Using Entry Assist to Create and Maintain Source Programs Source programs are typically maintained in fixed column format. For example:

NAME OPERATION OPERANDS COMMENTS

To use Entry Assist to create this format:

1. Set the left margin at the NAME column. 2. Set tab stops at the OPERATION, OPERAND, and COMMENTS columns.

Now you can enter source statements without thinking about column locations.

If you need to continue to another line, set the "end of line" signal to provide a warning of a line ending.

To create program prologue sections or other areas of continuous comments, the following technique is useful:

1. Create a group of lines with the * character in the first and last positions of the line. (To do this fast, use the duplicate line command [" n] with XEDIT, and the Repeat Line Command [Rn] with the SPF editor.)

The form on your screen should look like this:

2. Set margins within the pair of * characters as illustrated below. The Less Than character(<) represents a left margin. The Greater Than character(>) represents the right margin. (You do not actually see the < and > symbols except on the scale line when in Change Format mode.)

*< >*

With word wrap on, you can enter comments into the lines you created without thinking about margins or new-line decisions.

Chapter 4. Using Entry Assist with IBM Host Editors and Other Applications 4-5 Using Entry Assist With Other Programs You can use selected individual functions of Entry Assist with many other ' programs. Such functions include:

• Next Word • Previous Word • Cursor Position Indicator • Word Delete • Character Delete.

I When you use Entry Assist functions with other programs, you may not want to use I tab stops because tabbing to a tab stop can introduce space characters into the I data stream and may change your output.

Preparing Simple Memos Without Using DCF The DCF program provides very powerful document-formatting functions; however, DCF may not always be available. Entry Assist makes it possible to create formatted one-page memos.

I Use an editor to format the screen the way you think the memo should look. Use I blank lines to separate paragraphs.

1 Print the file using a utility program. For example, in a VM environment, use the I CMS PRINT command. In other programming environments, use whatever system I utilities are available. If you wish, you can write your own program to print I multipage documents.

4-6 Entry Assist User's Guide Chapter 5. Entry Assist Tutorial

In this chapter is the text of an online, self-teaching tutoriai for Entry Assist operators. Once this tutorial has been entered into a fiie, it can be used by anyone wanting to learn about Entry Assist.

How to Create the Tutorial 1. Enter the text of the tutorial once for each installation using the normal editor text entry capabilities. I 2. Key in the text so that when an operator reads it on the screen, it appears i exactly as it does in this printed copy. 3. Where there are blank lines in the printed text, put blank lines In the screen copy; the operator will work with those blank lines. 4. Make the tutorial available at each operator station where Entry Assist is to be used.

I To use the tutorial, the operator must use an editor to call up the file, then follow I the instructions provided by the tutoriai. The rest of this chapter contains the text i of the tutorial.

® Copyright IBM Corp. 1983.1990 5.-| This is a short tutorial explaining how to use Entry Assist. O Don't dwell long on the words here. The important thing is to follow the examples and try the new functions yourself.

In using this tutorial you will modify this file. Since you may want to use it again later, you should begin by making a copy of this tutorial and working with the copy.

Entry Assist provides functions that make it easier to enter and edit text material. You can enter the same things you enter now with your editor program.

Entry Assist has margins, tabs, and an audible "end of line" signal. Each of these functions acts just like the corresponding functions on a typewriter.

Entry Assist has a word wrap facility, which allows you to type without having to use the New Line key. Word wrap automatically ( i performs a new-line function for you when you need a new line. Word wrap picks up any parti ally-typed word and places it on the next line. (The input area of the next line must be empty.)

Note: For Configuration Support B Release 2 or later, if the input area of the next line contains more than one field, only the first field must be empty. (See your system administrator if you are not sure what configuration your system uses.) j Entry Assist functions allow you to delete a word, delete (^\ individual characters typematically, move the cursor to the next or previous word, display the row and column number of the current cursor position, and backspace-delete when in insert mode.

Let's discuss the functions individually, and you can learn about them by using them.

I Make sure that the Entry Assist function is available at your display.

To do this, press and hold the ALT key while pressing the DOC ON OFF key. If your display unit must be in the extended I select state (3179, 3180 or another unit using a converged or I enhanced keyboard), press the Ex Sel key before you press the I DOC ON OFF key. If Entry Assist is available, DOC{y appears near the right side of the operator information area.

If Entry Assist is not available, do not proceed with this tutorial.

Make sure your keyboard is labeled properly. Five keys (six key surfaces) on your keyboard should be labeled for Entry Assist. I If this labeling has not been done, you may find it convenient to ! do this now. Refer to "How to Customize Your Keyboard" on page 2-1, I for instructions on how to label your keyboard.

If you have made sure that Entry Assist is available at your terminal, and the keyboard has been labeled, proceed with this tutorial.

5-2 Entry Assist User's Guide Press the DOC ON OFF key several times. It turns document mode on or off.

When document mode is on, the characters DOC or D^ appear in the operator information area and the Entry Assist functions are available. D-» indicates that enhanced null/space processing mode is also active.

When document mode is off, Entry Assist functions are not available and your terminal operates exactly as it did before.

Let's try setting margins and also see how word wrap works. Do the following;

Turn on document mode. The DOC symbol (or the D-» symbol) and the 0 symbol appear in the operator information area. This is the word wrap symbol indicating that word wrap is on.

Position this line of text at the top of the screen. (This is to avoid a procedural problem later.)

Press the CHG FMT key. This puts the display into change format mode, so you can observe and change line formats.

A scale line appears in the operator information area (instead of the normal symbols), and an additional cursor appears on the scale line. The scale line shows the current settings of the margins, tab stops, and the "end of line" signal position.

The symbols used on the scale line are as follows:

margins < and > symbols tab stops _ symbol end of line signal position * symbol

I Move the cursor so that it lines up with the first character of this sentence.

Type the < symbol on the scale line. The previous < symbol disappears and only the one you typed remains on the scale line.

This is the new left margin. The scale line cursor also disappears, but reappears when you press the Cursor Move key.

Move the cursor until it lines up with the last character on this line, and type the > symbol. This sets your right margin at that position.

Press the CHG FMT key again. This takes you out of change format mode.

The scale line disappears, and the cursor returns to the position it was in when you entered change format mode.

Use the margins you just set.

Hold down the New Line key. The cursor stays at the new left margin you just set as it goes down the screen.

Chapters. Entry Assist Tutorial 5-3 Type a line of words in the space provided below. For example:

anything anything anything anything

Try to type a word into the right margin. As you type a character into the right margin, the partially typed word moves to the following blank line. That is word wrap in operation.

Try it now.

Experiment with word wrap some more in the space provided to get a good feel for how it works. Word wrap requires a blank line following the line being typed on. If you try to wrap when the next line is not blank, the keyboard locks. Try that too.

Note: For Configuration Support B Release 2 or later, if the input area of the next line contains more than one field, only the ^ ' first field must be empty. (See your system administrator if you are not sure what configuration your system uses.)

The RESET key clears keyboard lockups.

To turn word wrap on or off, press the WRAP key. If word wrap is on (the symbol is visible) , press the WRAP key to turn it off.

If word wrap is off (no arrow), press the WRAP key to turn it on. Try it a few times.

If you type a character into the right margin when word wrap is off, the keyboard locks. Turn off word wrap and type a word into the right margin to see how the keyboard locks.

Unlock the keyboard and turn word wrap on again before proceeding. '

5-4 Entry Assist User's Guide Let's set some tab stops and the audible "end of line" signal and see how they work.

I If you don't have an audible-alarm on your display, I ignore the part of this tutorial that discusses the "end of line" signal.

Press CHG FMT again to get back into change format mode. (The scale line appears.)

Press the CLEAR key. (This clears all existing tab stops.)

Refer to the line below with three Xs on it. Move the cursor along the scale line until it lines up with the first X.

I Press the Tab key. The tab key is the key with the arrow that I points to the right located above the shift lock key. The underscore symbol (J appears on the scale line. This indicates that a tab stop is set at this position on the line.

X X X

Set tab stops at the other two X positions.

If you accidentally set a tab stop at an incorrect position, place the cursor under it and press the Delete Character key to clear the tab stop.

We will use these tab stops in a minute.

Move the cursor along the scale line until it lines up about five positions to the left of the right margin and type the * symbol. This sets the "end of line" signal at that position on the line.

We will use the signal in a minute.

To clear the "end of line" signal, place the cursor r I under it and press the Delete Character key. Type the I * symbol again to set the "end of line" signal.

Press the CHG FMT key to turn off change format mode. The scale line disappears.

Now you have margins, tab stops, and an "end of line" signal set. Let's try them.

Use the spacebar to move the cursor along the following blank line. The "end of line" signal sounds as the cursor passes through the signal position on the line.

Return the cursor to the left margin and press the Tab key. The cursor moves to the next tab stop.

Press the Tab key a few times and see how the cursor moves from tab stop to tab stop.

Chapter 5. Entry Assist Tutorial 5-5 Hold the Tab key down. The cursor stops not only at tab stops, but also at other positions on the line. These other positions are unprotected fields, and the cursor stops at them just as it always did when you used the Tab key.

Press the Back Tab key. The cursor stops at the same positions as it moves in the reverse direction.

Use these keys to move the cursor around to get a feel for how they operate.

The following is an example of some columns of numbers. You can enter such columns by using the Tab key to rapidly position the cursor to the beginning position of each column:

0808 0808 97979 0808 8080 98088 0808 0808 80800 8008 9797 77575

In the blank area below, enter some columns of numbers of your own choosing. Use the Tab key to position the cursor to the column positions.

Remember the following things about using the Tab key:

In some situations, the Tab key inserts space characters that can change the way your printed document looks.

When document mode is off, the Tab key moves the cursor to the next unprotected field. ^ ^

When document mode is on, the Tab key moves the cursor to the next unprotected field or to the next tab stop, whichever comes first.

If the cursor moves to a tab stop, it may also replace null characters with space characters in the unprotected positions that the cursor passes over. This preserves the spacing between the columns of data when the data is sent to the host.

Clear all tab stops first to avoid entering space characters during tabbing operations.

Now let's try some other things.

5-6 Entry Assist User's Guide First, let's do cursor movement by word:

Position the cursor at this line.

I Use the ALT Shift of the Cursor Left key (<■) to move the cursor I to the previous word.

I Use the ALT Shift of the Cursor Right key (^) to move the cursor I to the next word.

Try holding these keys down to see how they operate typematically.

Experiment with these keys to get a feel for how they work.

Now let's see how the new delete functions operate.

Do a typematic character delete.

To try the Character Delete key, position the cursor under the first character of the following sample sentence, and hold down the typematic delete key to delete multiple characters I (refer to Figures 2-1 through 2-4 to find out the location of the I typematic character delete key).

Sample Sentence: This is a sample sentence. i Delete a word.

A word delete erases text from the current cursor position to the end of the word.

Place the cursor under any character of the sample word below and use the Word Delete key to see how it operates.

Sample Word: Supercalifragilisticexpialidocious

The word delete function deletes from the current cursor position to the end of the word and moves the rest of the words on that line to the left to fill in the vacated positions.

Type some more words in the space below and then delete them to get a feel for the word delete capability.

Next, let's try some things that work only when your display is in insert mode. Do the following:

Try the backspace delete while in insert mode. This function undoes what a character insertion does.

Chapters. Entry Assist Tutorial 5-7 Use the Insert key (which you are already familiar with) to insert the word "last" into the following sample sentence.

Sample Sentence: This is the time.

Insert it just in front of the word "time".

The Backspace Delete key is marked by an arrow that points left. (See Figures 2-1 through 2-4 to help you locate the Backspace Delete key.)

After you type the word "last", press the Backspace Delete key to undo the insertion.

Every time you press the key, you delete the previous character and back up the cursor by one position.

Remember, this function operates only while insert mode is set.

We also need to understand how word wrap works when insert mode is set.

Do the following for practice:

Turn on insert mode and make sure that word wrap is on.

Insert enough words into the first sample sentence below to force a word into the right margin and see how word wrap works in insert mode.

Sample Sentence: This is a sentence. This is a sample sentence.

The words wrap out of the first line into the second line as long as there are sufficient spaces or nulls on the second line to accoiranodate them.

When the next line cannot acconmodate the word, the keyboard locks.

Now let's try the cursor position indicator function.

Press the CURS POS key.

The current position of the cursor is displayed in the bottom row of the screen in the form rr/cc.

The letters "rr" mean the number of the row. The letters "cc" mean the number of the column.

The rr/cc value remains displayed as long as you hold down the ALT Shift key.

Remember that line formats (margins, tab settings, and an "end of line" signal setting) are remembered as long as power remains on at the control unit.

5-8 Entry Assist User's Guide Turn document mode off and back on again. Your line formats will not change. This is useful because, at times, you may need to turn off document mode for a short period of time.

This is the end of the tutorial. If you have questions about Entry Assist, consult the "Entry Assist User's Guide."

Chapters. Entry Assist Tutorial 5-9 List of Abbreviations

A. (1) Ampere. (2) Attention. I. Information (format).

Alt. Alternate. ID. Identification, identifier,

APL. A Programming Language. in. Inch (or inches).

B L

B. Busy. L. Left.

Lie. Last in chain. c

CC. Control check, Chain Command (flag). N

CE. (1) IBM Customer Engineer. (2) Correctable No. Number. error. (3) Channel-end. NUM. Numeric. CfUIS. Conversational monitor system.

OR. (1) Command Reject. (2) Carriage return. P

CUT. Control unit terminal. P. Printer, protected.

D R

D. Display. R. Rear, row.

DE. Device-end. rel. Relative.

DES. Data Encryption Standard. RPO. Request for price quotation.

DOS. Disk Operating System. RR. Request ready, receive ready.

DPPX. Distributed Processing Programming s Executive.

S. Sequenced (format), side. E SCS. SNA character string. EX. Exception (response). SI. Suppress Index.

F SP. (1) Space. (2) Specific Poll.

FCC. Federal Communications Commission. SPF. System Productivity Facility.

U. Unprotected.

U.S. United States.

VSE. Virtual storage extended. ! WE. Western Electric.

X-2 Entry Assist User's Guide I Glossary

audible alarm. (1) An alarm that Is sounded when designated events occur that require operator attention or Intervention before system operation can continue. active. Able to communicate on the network. An (2) A special feature that sounds a short, audible tone adapter is active If It Is able to pass tokens on the automatically when a character Is entered from the network. keyboard Into the next-to-last character position on the screen. The tone can also be sounded under program adapter. A general term for a device that provides control. some transitional function between two or more devices.

address. (1) A value that identifies a register, a particular part of storage, a data source, or a data sink. central site customizing. The process of tailoring The value Is represented by one or more characters. control unit microcode for each controller In a network, (2) To refer to a device or an Item of data by Its at the central site. address. (3) In word processing, the location. Identified by an address code, of a specific section of channel-attached. Pertaining to attachment of devices the recording medium or storage. (4) The location In directly by data channels (I/O channels) to a computer. the storage of a computer where data is stored. (5) In Synonym for local. Contrast with data communication, the unique code assigned to each telecommunication-attached. device or work station connected to a network. channel-to-channel adapter. A hardware device that alternate cursor. (1) An Image reversal of each dot In can be used to connect two channels on the same the character cell at the cursor position. (2) A cursor computing system or on different systems. other than the one displayed on the display surface at power on time. character set. (1) A defined collection of characters. (2) A group of characters used for a specific reason, application. The use to which an information for example, the set of characters a printer can print. processing system Is put, for example, a payroll (3) The collection of graphic characters required to application, an airline reservation application, or a support a specific language. network application. command. An Instruction that directs a control unit or asynchronous. (1) Without regular time relationship; device to perform an operation or a set of operations. unexpected or unpredictable with respect to the execution of program Instructions. (2) In asynchronous communication adapter. (1) A circuit card with data transmissions, data characters may be sent or associated software that enables a processor, received at any time; no modem clocking Is used to controller, or other device to be connected to a establish bit timing. network. (2) See EIA communication adapter, V.35 communication adapter, and X.21 communication Asynchronous Emulation Adapter (AEA). In the 3174 adapter. Establishment Controller, an adapter that enables an ASCII terminal to communicate with a 3270 host using Concurrent Communication Adapter (CCA). In the 3174 the 3270 data stream, an ASCII terminal to Establishment Controller, a communication adapter communicate with an ASCII host through the 3174, and that, along with the necessary microcode, provides a 3270 terminal to communicate with an ASCII host terminals attached to the 3174 the ability to using data streams, such as the DEC VT100 data concurrently access an additional 3270 host. stream or the IBM 3101 data stream. configuration. The arrangement of a computer system attachment feature. The circuitry by which a cable or network as defined by the nature, number, and chief from a local terminal or a modem for a remote terminal characteristics of Its functional units. More specifically, Is attached to a 3792 Auxiliary Control Unit or a 3791 the term configuration may refer to a hardware Controller. configuration or a software configuration. See also system configuration. attribute. (1) A characteristic. (2) A terminal display language or transformation definition language (TDL) control character. (1) A character whose occurrence keyword that specifies a particular quality for the TDL In a particular context specifies a control function. object with which It Is associated. (2) A character used to specify that a control unit Is to perform a particular operation.

' Copyright IBM Corp. 1983,1990 X-3 controller. A unit that controls input/output operations disk. A direct-access data storage medium, which may for one or more devices. be either flexible (diskette) or hard (fixed disk). control unit. A general term for any device that diskette. A flexible magnetic disk enclosed In a provides common functions for other devices or protective container. mechanisms. Synonym for controller. diskette drive. The mechanism used to seek, read, control unit terminal (CUT). A terminal that relies on and write data on diskettes. the 3174 to Interpret the data stream. Examples are the 3178, 3179, 3278 Model 2. and 3279 Model S2A. Disk Operating System (DOS). A program that controls the operation of an IBM Personal Computer and the control unit terminal(CUT) mode. A host-Interactive execution of application programs. mode that enables an IBM 3270 Personal Computer customized in this mode to run only one session display field. (1) An area in the display buffer that emulating a 3178, 3179, 3278 Model 2, or 3279 Model contains a set of characters that can be manipulated or S2A. operated upon as a unit. (2) A group of consecutive characters (In the buffer) that starts with an attribute conversion. (1) In programming languages, the character (defining the characteristics of the field) and transformation between values that represent the same contains one or more alphanumeric characters. The data Item but belong to different data types. field continues to, but does not Include, the next Information may be lost as a result of conversion attribute character. because accuracy of data representation varies among different data types. (2) The process of changing from display frame. (1) In computer graphics, an area In one method of data processing to another or from one storage In which a display Image can be recorded. data processing system to another. (3) The process of (2) In computer micrographics, an area on a microform changing from one form of representation to another, in which a display Image can be recorded. for example, to change from decimal representation to binary representation. display station. An Input/output device containing a display screen and an attached keyboard that allows a create. In 3174 central site customizing, to create a user to send Information to or receive Information from library member for a network controller, and store the the system. customizing data for that library member on a Library diskette. cursor. (1) A movable, visible mark used to Indicate the position at which the next operation will occur on a EiA communication adapter. A communication adapter display surface. (2) A unique symbol that Identifies a conforming to EIA standards that can combine and character position In a screen display, usually the send Information on two lines at speeds up to 19.2 character position at which the next character to be kbps. entered from the keyboard will be displayed. emulate. (1) To Imitate one system with another, primarily by hardware, so that the Imitating system accepts the same data, executes the same computer programs, and achieves the same results as the data stream. (1) All data transmitted through a data Imitated computer system. channel in a single read or write operation. (2) A continuous stream of data elements being transmitted, emulation. (1) The Imitation of all or part of one or Intended for transmission. In character or system by another, primarily by hardware, so that the binary-digit form, using a defined format. See also data Imitating system accepts the same data, executes the stream format. same programs, and achieves the same results as the Imitated computer system. (2) The use of data stream format, in SNA, the format of the data programming techniques and special machine features elements (end-user data) In the request unit (RU). See to permit a computing system to execute programs also 3270 data stream and SNA character string (SCS). written for another system. (3) Imitation; for example, imitation of a computer or device. (4) See terminal decrypt. To convert encrypted data Into clear data. emulation. (5) Contrast with simulation. Contrast with encrypt. encrypt. To scramble data or convert It, before device. A mechanical, electrical, or electronic transmission, to a secret code that masks the meaning contrivance with a specific purpose. of the data to any unauthorized recipient. Contrast with decrypt.

X-4 Entry Assist User's Guide multidrop (network). A network configuration in which there are one or more intermediate nodes on the path between a central node and an endpoint node. field. See display field.

field attribute. A control character stored in the N character buffer in the first character position of a field. For those devices supporting the 3270 data stream, a native mode. A 3179 or 3180 operational mode that field attribute defines protected/unprotected, uses the full capabilities of those models' display and alphanumeric/numeric, detectabie/nondetectabie, keyboard. dispiay/nondisplay, intensity, and modified data tag (MDT). network. (1) An arrangement of nodes and connecting branches. Connections are made between data file. A named set of records stored or processed as a stations. (2) A configuration of data processing unit. devices and software connected for information interchange. fixed disk. A rigid magnetic disk used in a fixed disk I drive.

frame. (1) The portion of a tape, on a line perpendicular to the reference edge, on which binary operator information area (OIA). The area below the characters can be written or read simultaneously. line near the bottom of the display area where graphics (2) A housing for machine elements. (3) The hardware and alphanumeric characters are displayed to define support structure, covers, and all electrical parts the status of the terminal or the system to the operator. mounted therein that are packaged as one entity for shipping. (4) A formatted display. See display frame.

parameter. (1) A variable that is given a constant value for a specified application and that may denote I get. in 3174 central site customizing, to select the type the application. (2) An item in a menu for which the ! of data you want and store it in working copy. user specifies a value or for which the system provides a value when the menu is interpreted. (3) Data passed between programs or procedures.

protected field. (1) In word processing, preset data or local. Pertaining to a device accessed directly without an area that cannot be changed or overridden by an use of a telecommunication line. Synonym for operator without altering the program. (2) On a display channel-attached. Contrast with remote. device, a display field in which a user cannot enter, modify, or erase data. Contrast with unprotected field. location. With reference to a 3174, a place within the 3174 chassis where a particular card or adapter is put. In 3174 central site customizing, to store data inserted. from the working copy into a library member.

main storage. Program-addressable storage from remote. Pertaining to a system, program, or device which instructions and other data can be loaded that is accessed through a telecommunication line. directly into registers for subsequent processing. request for price quotation (RPQ). An alteration or memory. Program-addressable storage from which addition to the functional capabilities that the controller instructions and other data can be loaded directly into provides. registers for subsequent execution or processing. Synonymous with main storage. ring interface adapter. A device that assumes the basic data transmission functions of node, such as microcode. (1) One or more microinstructions. (2) A frame recognition, address decoding, error checking, code, representing the instructions of an instruction buffering of frames, fault detection, and, in Token-Ring set, that is implemented in a part of storage that is not Networks, token generation. program-addressable. (3) To design, write, and also to test one or more microinstructions. ring network. A network configuration where a series of attaching devices are connected by unidirectional transmission links to form a closed path.

Glossary X-5 simulate. (1) To represent certain features of the telecommunication-attached. Pertaining to the behavior of a physical or abstract system by the attachment of devices by teleprocessing lines to a host behavior of another system; for example, to represent a processor. Synonym for remote. Contrast with physical phenomenon by means of operations channel-attached. performed by a computer or to represent the operations of a computer by those of another computer. terminal, in data communication, a display station or (2) To imitate one system with another, primarily by printer capable of sending or receiving information. software, so that the imitating system accepts the same data, executes the same computer programs, and terminal emulation. The capability of a achieves the same results as the imitated system. microcomputer, personal computer, 3270 CUT mode (3) Contrast with emulate. display station, 3270 printer, ASCII display station, or ASCII printer to operate as if it were a particular type of simulation. (1) The representation of selected terminal linked to a processing unit and to access data. characteristics of the behavior of one physical or abstract system by another system. In a digital terminal multiplexer. A device, such as the 3299 computer system, simulation is done by software; for Terminal Multiplexer, for interleaving the signals for example,(a) the representation of physical phenomena many devices onto a single coaxial cable. by means of operations performed by a computer system, and (b) the representation of operations of a terminal multiplexer adapter (TMA). This adapter is computer system by those of another computer system. connected to the terminal adapter in the 3174 and (2) Contrast with emulation. provides control for a maximum of eight terminals.

SNA character string (SOS). A character string token. In a local area network, the symbol of authority composed of EBCDIC controls, optionally intermixed passed among data stations to indicate the station with end-user data, that is carried within a temporariiy in controi of the transmission medium. request/response unit. Note: A token is a particular message or bit pattern that signifies permission to transmit. staging adapter. (1) An addition to a System/370 Model 158 or 168 Integrated Storage Control (ISC) Token-Ring Network. (1) A ring network that allows feature that enables the integrated storage control to unidirectional data transmission between data stations operate in a 3850 Mass Storage System. (2) An IBM by a token-passing procedure over one transmission 3850 Model 3 Storage Control, which is a 3830 Model 2 medium so that the transmitted data returns to the Storage Control that has been modified to operate in a transmitting station. (2) A network that uses a ring 3850 Mass Storage System. topology, in which tokens are passed in a circuit from node to node. A node that is ready to send can capture station. (1) An input or output point of a system that the token and insert data for transmission. uses telecommunication facilities; for exampie, one or more systems, computers, terminals, devices, and type. In the 3174 Establishment Controller, the associated programs at a particuiar location that can identifying number of a card. For example, 9150 is the send or receive data over a telecommunication line. type number of the terminal adapter in the 3174. (2) A location in a device at which an operation is performed, for example, a read station. (3) In SNA, a link station. U storage. A unit into which recorded text can be unprotected field. A displayed field in which a user entered, in which it can be retained and processed, and can enter, modify, or delete data. Contrast with from which it can be retrieved. See also memory. protected field.

Suppress Index (SI) order. An order that generates the suppress index character, valid only for the 3288 Model I V 2 printer. This character inhibits a line index to allow overprinting. V.35 communication adapter. A communication adapter that can combine and send information on one system configuration. A process that specifies the line at speeds up to 64 kbps, and conforms to the CCITT devices and programs that form a particular data V.35 standard. processing system.

X-6 Entry Assist User's Guide CCITT that defines the interface between data terminal w equipment and packet switching networks. i write. To make a permanent or transient recording of I data in a storage device or on a data medium.

3270 data stream. (1) The commands, control codes, orders, attributes, and data or structured fields for 3270 devices, that are transmitted inbound to an application X.21 communication adapter. A communication program or outbound to a terminal. (2) Data being adapter that can combine and send information on one transferred from or to an allocated primary or tertiary line at speeds up to 64 kbps, and that conforms to device, or to the host system, as a continuous stream of CCITT X.21 standards. data and 3270 Information Display System control elements in character form. X.25. In data communication, a recommendation of the

Glossary X-7 Reader's Comments

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