format

IN:

Output string specification

	Purpose	Adds a text string to the description of the most-recently-reported error (only one text string per error).
	Return value	None
	Description	HEpush places on the error stack the file name, function name, line number, and a generic description of the error type. HEreport can then be used to give a more case-specific description of the error. Only one additional annotation can be attached to each error report.
		The format argument must conform to the string specification requirements of printf.