             Control Codes and Escape Sequences supported by pcvt
===============================================================================

CONTROL CODES
-------------------------------------------------------------------------------

	NUL (0x00)	ignored
	SOH (0x01)	ignored
	STX (0x02)	ignored
	ETX (0x03)	ignored
	EOT (0x04)	ignored
	ENQ (0x05)	ignored
	ACK (0x06)	ignored

	BEL (0x07)	beep

	BS  (0x08)	move one character position to the left
			until at left margin

	HT  (0x09)	move to next tab stop

	LF  (0x0a)	move to next line, same column
	VT  (0x0b)	move to next line, same column
	FF  (0x0c)	move to next line, same column
	
	CR  (0x0d)	move to left margin on current column
	
	SO  (0x0e)	invoke character set G1 into GL
	SI  (0x0f)	invoke character set G0 into GL

	DLE (0x10)	ignored
	DC1 (0x11)	ignored
	DC2 (0x12)	ignored
	DC3 (0x13)	ignored
	DC4 (0x14)	ignored
	NAK (0x15)	ignored
	SYN (0x16)	ignored
	ETB (0x17)	ignored

  	CAN (0x18)	abort current escape sequence

	EM  (0x19)	ignored

	SUB (0x1a)	abort current escape sequence
	
	ESC (0x1b)	start of escape sequence

	FS  (0x1c)	ignored
	GS  (0x1d)	ignored
	RS  (0x1e)	ignored
	US  (0x1f)	ignored

	VT220 control codes in the range 0x80 .. 0x9f are completely ignored,
	but displayed as C1 display controls.


ESCAPE SEQUENCES                                              DIGITAL EQUIPMENT
-------------------------------------------------------------------------------

(ni) = not implemented yet, all hooks available inside emulator!
<p>  = numeric parameter

	ESC space F	select 7-bit c1 control transmission (ni)
	ESC space G	select 8-bit c1 control transmission (ni)

	ESC # 3		double height top half		(ni)
	ESC # 4		double height bottom half	(ni)
	ESC # 5		single width single height	(ni)
	ESC # 6		double width single height	(ni)

	ESC # 8		fill screen with 'E's

	ESC 7		save cursor

	ESC 8		restore cursor

	ESC =		keypad application mode

	ESC >		keypad numeric mode

	ESC D		index

	ESC E		next line

	ESC H		set tab at cur col

	ESC M		reverse index

	ESC N		single shift G2

	ESC O		single shift G3

	ESC Z		who are you

	ESC d		Only available if PCVT_SETCOLOR was defined when
			compiling the kernel, allows to set custom color table
			for more info, see pcvt_out.c ...

	ESC c		power up reset

	ESC n		Lock Shift G2 -> GL

	ESC o		Lock Shift G3 -> GL

	ESC }		Lock Shift G2 -> GR

	ESC |		Lock Shift G3 -> GR

	ESC ~		Lock Shift G1 -> GR

	ESC [ ? <p> h	set dec private modes 	
	ESC [ ? <p> l	reset dec private modes 	
		 1	CKM - cursor key mode
		 6	OM - origin mode
		 7	AWM - auto wrap mode

	ESC [ <p> ' z	DECELR - Enable Locator Report			(ni)

	ESC [ <p> ' {	DECSLE - Select type of locator events		(ni)

	ESC [ ? n	Terminal Reports

	ESC [ ? K	selective erase in line

	ESC [ ? J	selective erase in display

	ESC [ <p> @	insert char(s)

	ESC [ <p> A	cursor up

	ESC [ <p> B	cursor down

	ESC [ <p> C	cursor forward

	ESC [ <p> D	cursor backward

	ESC [ <p> H	cursor direct cursor addressing

	ESC [ <p> J	erase screen

	ESC [ <p> K	erase line

	ESC [ <p> L	insert line

	ESC [ <p> M	delete line

	ESC [ <p> P	delete char

	ESC [ <p> S	scroll up

	ESC [ <p> T	scroll down

	ESC [ <p> X	erase character

	ESC [ <p> c	device attributes

	ESC [ <p> f	direct cursor addressing

	ESC [ <p> g	clear tabs

	ESC [ <p> h	set mode
	ESC [ <p> l	reset mode
	       4	IRM - insert replacement mode
	      20	LNM - line feed / newline mode

	ESC [ <p> i	media copy (ni)

	ESC [ <p> m	select graphic rendition
	       0      	reset to normal attributes
	       1	bold
	       4	underline
	       5	blinking
	       7	reverse
	       22	bold off
	       24	underline off
	       25	blinking off
	       27	reverse off
	       30-37	foreground colors	(on color display)
	       40-47	background colors	(on color display)

	ESC [ <p> n	device status report

	ESC [ <p> r	set scrolling region

	ESC [ <p> x	request / report terminal parameters

	ESC [ <p> y	invoke selftests (ni)


	ESC [ x		request/report parameters
	ESC [ y		invoke seftest(s)

	ESC [ "	q	SCA
	ESC [ !	p	SCA

	ESC ( <p>	designate G0
	ESC ) <p>	designate G1
	ESC * <p>	designate G2
	ESC + <p>	designate G3
	ESC - <p>	designate G1 (96)
	ESC . <p>	designate G2 (96)
	ESC / <p>	designate G3 (96)
	       A	British or ISO-Latin-1
	       B	USASCII
	       C	Finnish
	       5	Finnish
	       E	Norwegian/Danish
	       6	Norwegian/Danish
	       H	Swedish
	       7	Swedish
	       K	German
	       Q	French Canadien
	       R	French
	       Y	Italian
	       Z	Spanish
	       0	special graphics
	       1	alternate ROM
	       2	alt ROM, spec graphics
	       3	HP Roman 8, upper 128 chars*/
	       4	Dutch
	       <	DEC Supplemental
	       =	Swiss
	       >	DEC Technical


ESCAPE SEQUENCES                                                HEWLETT-PACKARD
-------------------------------------------------------------------------------

ESC&f<attr>a<key>k<llen>d<slen>L<label><string>		set function key label

	attr = attribute, 	0 - normal		(not implemented)
				1 - local only		(not implemented)
				2 - transmit only	(not implemented)

	key = function key number, range 1 .. 8

	llen = label string length

	slen = string string length

	label = label data (up to 16 chars per label)

	string = string to send data (up to 80 chars per label)
							(not implemented)

EXAMPLE:
========
	
	ESC&f0a1k16d1LFUNCTION  KEY   0

	sets function key label 1 to "FUNCTION  KEY   ".
	should program fkey 1 to emit "0" on keypress


ESC&j<parm>	function key operations

	parm = '@'	remove the function key labels from screen

	parm = 'A'	display the modes set of function key labels

	parm = 'B'	enable & display user function key labels

	parm = 'C'	clear message & restore the current key labels

	parm = 'R'	enable usr/sys and menu and label modes

	parm = 'S'	disable usr/sys and menu and label modes

