Commodore 128D - Section 5-Advanced Basic 7.0 Commands

SECTION 5
Advanced BASIC
7.0 Commands
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INTRODUCTION 75
ADVANCED LOOPING 75
TheDO/LOOP Statement 75
Until 75
While 76
Exit 76
The ELSE Clause with IF-THEN 77
The BEGIN/BEND Sequence with IF-THEN 77
The SLEEP Command 78
FORMATTING OUTPUT 78
The PRINT USING Command 78
The PUDEF Command 79
SAMPLE PROGRAM 79
INPUTTING DATA WITH THEGETKEY COMMAND 80
PROGRAMMING AIDS 81
Entering Programs 81
AUTO 81
RENUMBER 81
DELETE 82
Identifying Problems in Your Programs 83
HELP 83
Error Trapping—The TRAP Command 83
Program Tracing—The TRON and TROFF Commands 85
WINDOWING 86
Using the WINDOW Command to Create a Window 86
Using the ESC key to Create a Window 87
2 MHZ OPERATION 89
The FAST and SLOW Commands 89
KEYS UNIQUE TO C128 MODE 89
Function Keys 89
Redefining Function Keys 90
Other Keys Used in C128 Mode Only 90
HELP 90
NO SCROLL 91
CAPS LOCK 91
40/80 DISPLAY 91
ALT 91
TAB 92
LINE FEED 92
USING C128 MODE—Some BASIC Commands and Keyboard Operations Unique to
73 C128Mode