INT 49 - TI Professional PCIBM PC - CRT - CLEAR ENTIRE TEXT SCREEN AND HOME CURSOR
	AH = 13h
Return: nothing
Note:	AH=00h,04h,05h,0Bh,0Ch,0Dh,0Fh are documented as NOPs
SeeAlso: AH=01h,AH=02h,AH=06h,AH=14h