Apple IIe - Page 45

Applesoft BASIC Programming 45
LIST can be used without any parameters to list the entire
program. LIST can also be used with a single line number to list
just
that program line . If LIST is used with the following format:
LIST line 1-
line
1 and all subsequent lines will be listed.
If LIST is used as follows:
LIST -line 2
line 2
and all lines preceding it will be listed.
In certain situations (especially
when a long program is being
listed, you may wish to cancel or temporarily halt a program
listing. With the lie, you can cancel an Applesoft program listing
by pressing Ctrl-C.
A
program listing can be stopped temporarily by pressing Ctrl-S
and resumed
by pressing the space bar.
Error Messages
When the lie encounters a statement wi th an error , an error
message will be displayed. The error message will be displayed in
the following formats:
? SYNTAX ERROR -Applesoft BASIC
***SYNTAX
ERROR-Integer BASIC
The various
Applesoft and Intege r BASIC error messages are
described in
Appendices D and E.
BASIC PROGRAM EDITING
In
our discussion of the lie keyboard, we mentioned several of
the keys used in editing. These include :
- used
to backspace the cursor.
-used to move the cursor foward .