shift_string_left_c

	shift_string_left_c(string.i1a.r, len.i4.v, shift.i4.v)

	This routine will shift the text string 'string' to the left
	'shift' characters.

	string		string to shift
	len		length of string to shift
	shift		number of characters to shift

	This function requires the following include files:

	cbslib_h

	Related functions:

	str_shift_c, str_justify_c, justfy