INT 62 u - FGDRIVER v3.03+ - "FG_CHGTEXT" - DISPLAY STRING ATIBM PC AT CURSOR POSITION
	AX = 000Ch
	CX = length of string
	ES:BX -> string to be displayed
Return: text cursor updated
Notes:	the FGDRIVER functions are rearranged with each major release, but
	  their parameters do not change (see #03474)
	This call is ignored in graphics modes
SeeAlso: AX=000Bh,AX=0096h