GWBASIC User's Manual

GW-BASIC User's Guide
moves the characters following the cursor to the right making room for the new
information.
● Adding to or truncating characters at the end of the program line.
If you have changed more than one line, be sure to press RETURN on each modified line. The
modified lines will be stored in the proper numerical sequence, even if the lines are not updated
in numerical order.
Note
A program line will not actually have changes recorded within the GW-BASIC program until the
RETURN key is pressed with the cursor positioned somewhere on the edited line.
You do not have to move the cursor to the end of the line before pressing the RETURN key. The
GW-BASIC Interpreter remembers where each line ends, and transfers the whole line, even if
RETURN is pressed while the cursor is located in the middle or at the beginning of the line.
To truncate, or cut off, a line at the current cursor position, type CTRL-END or CTRL-E, followed by
pressing the RETURN key.
If you have originally saved your program to a program file, make sure that you save the edited
version of your program. If you do not do this, your modifications will not be recorded.
4.3 Special Keys
The GW-BASIC Interpreter recognizes nine of the numeric keys on the right side of your
keyboard. It also recognizes the BACKSPACE key, ESC key, and the CTRL key. The following keys
and key sequences have special functions in GW-BASIC:
Key Function
BACKSPACE or CTRL-H Deletes the last character typed, or deletes the character to the
left of the cursor. All characters to the right of the cursor are
moved left one position. Subsequent characters and lines within
the current logical line are moved up as with the DEL key.
CTRL-BREAK or CTRL-C Returns to the direct mode, without saving changes made to the
current line. It will also exit auto line-numbering mode.
CTRL-CURSOR LEFT or CTRL-B Moves the cursor to the beginning of the previous word. The
previous word is defined as the next character to the left of the
cursor in the set A to Z or in the set 0 to 9.
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