Commodore_PC_GW-BASIC_Interpreter_Users_Guide_1986-10_Commodore.pdf

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COMMODORE
PERSONALCOMPUTER
GW-BASIC®
INTERPRETER
User's Guide
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COMMODORE PC
PERSONAL COMPUTER
GW-BASIC* Interpreter User's Guide
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Information in this document is subject to change without notice and does not
represent acommitmenton thepart ofCommodore Business Machines orMicrosoft
Corporation. The software described in this document is furnished under a license
agreement or nondisclosureagreement' The software may be used or copied only
in accordance with the terms ofthe agreement. Itis against the law to copy this
software on magnetic tape, disk, or any other medium for any purpose other than
the purchaser's personal use.
© Copyright 1986 Commodore Electronics Limited. All rights reserved.
© Copyright Microsoft Corporation, 1986. All rights reserved.
Portions copyright COMPAQ Computer Corporation, 1985.
Commodore is a registered trademark ofCommodore Electronics Limited.
Commodore PC 10, Commodore PC 10-1 and Commodore PC 10-2 are trademarks
ofCommodore Electronics Limited.
Microsoft®, MS-DOS®, GW-BASIC® and the Microsoft logo are registered trademarks
ofMicrosoft Corporation.
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COMPAQ® is a registered trademark ofCOMPAQ Computer Corporation.
DEC® is a registered trademark ofDigital Equipment Corporation.
FirstPrinting, October 1986
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Copyright © 1986 by Commodore Electronics Limited
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Allrightsreserved
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This manual contains copyrighted and proprietary information. No part ofthis publication may
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be reproduced, stored in a retrieval system, or transmitted in any form or by any means,
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electronic, mechanical, photocopying, recording or otherwise, without the prior written
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permission ofCommodore Electronics Limited.
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Contents
Welcome to GW-BASIC ]
1.1 System Requirements 3
1.2 Preliminaries 3
1.3 Notational Conventions 3
1.4 Organization ofThis Manual
1.5 Bibliography 5
2 Getting Started With GW-BASIC 7
2.1 Loading GW-BASIC 9
2.2 Modes ofOperation 9
2.3 The GW-BASIC Command Line Format 10
2.4 GW-BASIC Statements, Functions,
Commands, and Variables 14
2.5 Line Format 16
2.6 Returning to MS-DOS 18
3 Reviewing and Practicing GW-BASIC 19
3.1 Example for the Direct Mode 21
3.2 Examples for the Indirect Mode 22
3.3 Function Keys 24
3.4 Editing Lines 24
3.5 Saving Your Program File 25
4 The GW-BASIC Screen Editor 27
4.1 Editing Lines in New Files 29
4.2 Editing Lines in Saved Files 29
4.3 Special Keys 30
4.4 Function Keys 33
in
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