IBM INFO PRINT 3000 - Manual (Page 68)

In Insert mode, characters you select are inserted at the cursor
position, moving any existing characters to the right. In Overwrite
mode, characters you select are “typed” at the cursor position
directly over existing characters.
Delete Erases an existing character at the cursor position.
Home Moves the cursor to the beginning (the left side) of the entry field.
End Moves the cursor to the end (right side) of the entry field.
Left Moves the cursor one character space to the left.
Right Moves the cursor one character space to the right.
Backspace Erases an existing character to the left of the cursor.
Caps (Alphanumeric Keyboard Only) Acts as a switch to change
keyboard entries from lowercase to uppercase, or uppercase to
lowercase.
Shift (Alphanumeric Keyboard Only) Affects only the next character you
enter by changing the case (upper or lower) set by the “Caps” key
to the opposite case.
Lock (Alphanumeric Keyboard Only) Acts as a switch between locked
and unlocked mode for uppercase characters, which is set by the
“Caps” key.
Figure 5. Numeric Keypad Window
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InfoPrint 3000 Operator’s Guide