Radio Shack TRS-80 Model 3 Operation And Reference Manual page 207

n
8
Moves the cursor to the left by n spaces. If no number n is specified, the cursor
moves back one space. When the cursor moves to the left, all characters in its
"path" are erased from the display, but they are not deleted from the program
line. Using this in conjunction with
0
or
K
or
C
can give misleading Video Displays
of your program lines. So, be careful using it! For example, assuming you've used
nSpace-Bar so that the Display shows:
100 FOR I = 1 TO 1011I
type
8
and hit the 8key. The display will show something like this:
100FOR 1=11III
(SHIFT)
CD
(will vary depending on number of blanks in
your line 100)
Hitting
SHIFT
and(l)keys together effects an escape from any of the Insert
subcommands:
x,
I
and
H.
After escaping from an Insert subcommand, you'll still
be in the Edit Mode, and the cursor will remain in its current position. (Hitting
(ENTER) is another way to exit these Insert subcommands).
L (List Line)
When the Computer is in the Edit Mode, and is not currently executing one of the
subcommands below, hitting
L
causes the remainder of the program line to be
displayed. The cursor drops down to the next line of the Display, reprints the
current line number, and moves to the first position of the line. For example, when
the Display shows
10011III
hitL (without hitting (ENTER) key) and line 100 will be displayed:
100 FOR 1=1 TO 10 STEP.5: PRINT I, I [2, I [3: NEXT
10011III
This lets you look at the line in its current form while you're doing the editing.
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