Sinclair QL User Manual page 368

Insert text
. Press F4 to insert one or more lines of text below the current line in the current procedure.
Type the text and press ENTER. Pressing ENTER without any preceeding text will leave
the insert option.
Edit text
Press F5 to edit the current line of the current procedure. The line of text is copied into
the input line and can be edited with the line editor Press ENTER to replace the old
line with the new line.
The screen editor is entered with the sedit command. It allows you to design a new
screen layout or modify an existing one. Once you have designed a layout you can save
it on a Microdrive cartridge with the ssave command and load It with the sload command.
A screen layout is composed of two parts, the fixed background text and the variable
values that are displayed in it The screen command shows the background text and
the sprint command adds the current values of the variables it contains.
Sedit has two options:
type text into the screen background
press F3 to use a screen editing command.
There are four screen editing commands available after pring F3:
C -
clear the screen
V - mark a region to show a variable
I - set the ink colour
P - set the paper colour.
A
screen layout is made active by:
sload
screen
When a particular screen is active it will show the current values of its variables after
sprint, or when control returns to the keyboard after executing a program (or a command).
A screen layout is made inactive by clearing the screen with cis. If there is no active
screen, sprint has no effect You may only have one screen layout in the computer's
memory at anyone time.
The display command creates and uses its own screen layout It will therefore replace
any other screen layout with its own design.
The following commands are available.
Scans through the logically present records of the file in the fastest possible time.
Syntax all [ lin
I : ... :
endall
This scan will not, in general, be in any particular sequence. The optional logical file
name will force it to refer to a specified open file. If the logical file name is not given
then it will scan the current file.
The all loop is primarily designed for examining the file records rather than for changing
them. Do not use update within an all loop, unless you are sure that the length of the
record will remain unchanged. You may, for example, change the value of a number,
or convert a text field to upper case. If in doubt, use a while loop - using the value
of eof( ) to detect the end of the file. For example
first
while not eof()
update
next
endwhile
Alters the current screen layout to display the current values of the varrables.
Syntax: alter
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Reference
THE SCREEN
EDITOR
THE COMMANDS
ALL
ALTER
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