GWBASIC User's Manual

GW-BASIC User's Guide
CTRL-G Causes a beep to emit from your computer's speaker.
CTRL-K or HOME Moves the cursor to the upper left corner of the screen. The
screen contents are unchanged.
CTRL-HOME or CTRL-L Clears the screen and positions the cursor in the upper left corner
of the screen.
CTRL-R or INS Turns the Insert Mode on and off. Insert Mode is indicated by
the cursor blotting the lower half of the character position. In
Graphics Mode, the normal cursor covers the whole character
position. When Insert Mode is active, only the lower half of the
character position is blanked by the cursor.
When Insert Mode is off, characters typed replace existing
characters on the line. The SPACEBAR erases the character at the
current cursor position and moves the cursor one character to the
right. The CURSOR-RIGHT key moves the cursor one character to
the right, but does not delete the character.
When Insert Mode is off, pressing the TAB key moves the cursor
over characters until the next tab stop is reached. Tab stops
occur every eight character positions.
When Insert Mode is on, characters following the cursor are
moved to the right as typed characters are inserted before them
at the current cursor position. After each keystroke, the cursor
moves one position to the right. Line wrapping is observed. That
is, as characters move off the right side of the screen, they are
inserted from the left on subsequent lines. Insertions increase
logical line length.
When Insert Mode is on, pressing the TAB key causes blanks to
be inserted from current cursor position to the next tab stop. Line
wrapping is observed as above.
CTRL-NUM LOCK or CTRL-S Places the computer in a pause state. To resume operation, press
any other key.
CTRL-PRTSC Causes characters printed on the screen to echo to the line
printer (lpt1:). In other words, you will be printing what you
type on the screen. Pressing CTRL-PRTSC a second time turns off
the echoing of characters to lpt1:.
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