GWBASIC User's Manual

GW-BASIC User's Guide
RENUM Command
Purpose:
To renumber program lines.
Syntax:
RENUM[new number],[old number][,incrementR]]
Comments:
new number is the first line number to be used in the new sequence. The default is 10.
old number is the line in the current program where renumbering is to begin. The default is the
first line of the program.
increment is the increment to be used in the new sequence. The default is 10.
RENUM also changes all line number references following ELSE, GOTO, GOSUB, THEN, ON...
GOTO, ON...GOSUB, RESTORE, RESUME, and ERL statements to reflect the new line numbers. If a
nonexistent line number appears after one of these statements, the error message, "Undefined
line x in y" appears. The incorrect line number reference x is not changed by RENUM, but
line number y may be changed.
RENUM cannot be used to change the order of program lines (for example, RENUM 15,30 when
the program has three lines numbered 10, 20 and 30) or to create line numbers greater than
65529. An "Illegal function call" error results.
Examples:
RENUM
Renumbers the entire program. The first new line number will be 10. Lines increment by 10.
RENUM 300,,50
Renumbers the entire program. The first new line number will be 300. Lines increment by 50.
RENUM 1000,900,20
Renumbers the lines from 900 up so they start with line number 1000 and are incremented by 20.
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