Radio Shack TRS-80 Model III Operation Manual page 13

OPERATION
Control Keys (cont.)
Cancels the last character typed and moves the cursor
back one space.
Interrupts anything in progress in the machine and
returns to the command level.
Pauses execution of the current program. Press
a second time to continue execution.
Signifies the end of the current line. The Display Cursor
will drop to the beginning of the next line. Note that the
two
IMUsil
keys are identical. The rightmost
l§lm3;]
is for convenient use with the numeric
keypad.
Enters a space (blank) character and moves the cursor
one space forward.
Cursor Control - Moves cursor back one space without
cancelling previous character.
Cursor Control - Moves cursor forward one space with-
out entering a blank-space character.
Cursor Control - In some programs, moves cursor up
one line without erasing previously entered characters.
Cursor Control - In some programs, moves cursor
down one line without erasing previously entered charac-
ters; does not signify end-of-line.
Function Keys -
Software Programmable. Outputs a
control code which can be used by the Operating System
or Applications Software for special functions.
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