row.i4.v = lx_pix_to_row_c(pix_y.i4.v [,max_row.i4.r] [,text_size.i4.v])

	This routine is converts a Y coordinate on a graphics screen
	to a character cell row value.

	pix_y		y coordinate in pixels to be converted
	[max_row]	maximum number of rows possible
	[text_size]	text size to calculate for (default is current size)

	This function returns status values as follows:

	CBS_RANGE		pixel value is out of range
	otherwise		corresponding row value

	This function requires the following include files:

	cbslib_h, acnet_errors_h

	Related functions:

	lx_pix_to_column_c, lx_row_to_pix(_c), lx_col_to_pix(_c), lxprint(_c),
	lxtext(_c), wn_text(_c), lxblnk(_c), read_lx_format