Reads input from the user terminal into a specified buffer or select list.
IP [prompt] reference
IBP [prompt] reference
||Optional The prompt character.
||A reference to a buffer or a select list. A reference must begin with a %, !, &, or # character, followed by a number (%2), or followed by another of the four reference characters (%%).
PROC command is used to read input from the user terminal into the specified buffer or select list.
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