Sinclair QL User Manual page 147

DUNE
BASIC
DUNE will delete a single line or a range of lines from a SuperBASIC program.
syntax: range:
=
line_number TO line_number 1
line_number TO
2
TO
line~number
3
line_number 4
DUNE range
*
[,rangej
*
where 1 will delete a range of lines
2 will delete from the specified line to the end
3 will delete from the start to the specified line
4 will delete the specified line
•
example:
ii.
DUNE 10 TO 70, 80, ZOO TO 400
[will delete lines 10 to 70 Inclusive, line 80 and lines 200 to 400
inclusive]
DUNE
[will delete nothing]
•
The EDIT command enters the SuperBASIC line editor
The EDIT command is closely related to the AUTO command, the only difference being
in their defaults. EDIT defaults to a line increment of zero and thus will edit a single
line unless a second parameter is specified to define a line increment.
If the specified line already exists then the line is displayed and editing can be started.
If the line does not exist then the line number is displayed and the line can be entered.
The cursor can be manipulated within the edit line uSing the standard OL keystrokes.
•
cursor down
cursor up
cursor light
cursor left
OJ
EJ
B
ITJ
same as ENTER but automatically gives previous
existing line to edit next
same as ENTER but automatically gives next
eXisting line to edit next
I
CTRL
I G
delete character right
I
CTRL
I
EJ
delete character left
When the line is correct pressing ENTER will enter the line Into the program.
If an increment was specified then the next line in the sequence will be edited otherwise
edit will terminate.
EDIT
syntax:
example:
increment:
=
numeric_expression
EDIT line_number [,increment]
i EDIT 10 [edit line 10 onlYI
ii. EDIT 20,10 [edit lines 20,30 etc.]
•
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