INT 60 - HP 95LX System Manager - DISPLAY STRING

	DI = 0300h
	STACK:	2 WORDs unused dummies (for calls from high level languages)
		WORD	starting row (-3 is topmost, 0 is first user line)
		WORD	starting column
		DWORD	pointer to string
		WORD	length of string
		WORD	display style: 0000h normal, 0001h reverse video
		WORD	"OSTYLE"
Return: ???
	STACK unchanged
SeeAlso: INT 60/DI=0F03h,INT 60/DI=1005h