This function will copy text from the system clipboard to the specified variable field or named variable.
If a named variable is specified, the name field may contain any of the escape sequences described in Escape Sequences.
If Truncate is chosen, all leading and trailing spaces and newline characters will be removed. If there are multiple text lines remaining, only the first will be copied.
If Entire contents is chosen, the entire clipboard contents are copied.
The function is valid while batch processing but is intended to be used within the special Batch Start and Batch End inline actions.