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+Summary of ANSI standards for ASCII terminals		Joe Smith, 18-May-84
+
+Contents:
+  1.  Overview and Definitions
+  2.  General rules for interpreting an ESCape Sequence
+  3.  General rules for interpreting a Control Sequence
+  4.  C0 and C1 control codes in numeric order
+  5.  Two and three-character ESCape Sequences in numeric order
+  6.  Control Sequences in numeric order
+  7.  VT100 emulation requirements
+
+The VT100 USER GUIDE and ANSI standard X3.64-1979 both list the ANSI ESCape
+sequences in alphabetic order by mnemonic, but do not have a have a cross
+reference in order by ASCII code.  This paper lists the combination of all
+definitions from the three ANSI standards in numeric order.  For a description
+of the advantages of using these standards, see the article "Toward
+Standardized Video Terminals" in the April-1984 issue of BYTE magazine.
+
+ANSI X3.4-1977 defines the 7-bit ASCII character set (C0 and G0).  It was
+written in 1968, revised in 1977, and explains the decisions made in laying out
+the ASCII code.  In particular, it explains why ANSI chose to make ASCII
+incompatible with EBCDIC in order to make it self-consistant.
+
+ANSI X3.41-1974 introduces the idea of an 8-bit ASCII character set (C1 and G1
+in addition to the existing C0 and G0).  It describes how to use the 8-bit
+features in a 7-bit environment.  X3.41 defines the format of all ESCape
+sequences, but defines only the 3-character ones with a parameter character
+in the middle.  These instruct the terminal how to interpret the C0, G0, C1,
+and G1 characters (such as by selecting different character-set ROMs).
+
+  Note: NAPLPS does videotex graphics by redefining the C1 set and
+        selecting alternate G0, G1, G2, and G3 sets.
+  See the February 1983 issue of BYTE magazine for details.
+
+ANSI X3.64-1979 defines the remaining ESCape sequences.  It defines all the C1
+control characters, and specifies that certain two-character ESCape sequences
+in the 7-bit environment are to act exactly like the 8-bit C1 control set.
+X3.64 introduces the idea of a Control-Sequence, which starts with CSI
+character, has an indefinite length, and is terminated by an alphabetic
+character.  The VT100 was one of the first terminals to implement this
+standard.
+
+Definitions:
+
+  Control Character - A single character with an ASCII code with the range
+  of 000 to 037 and 200 to 237 octal, 00 to 1F and 80 to 9F hex.
+
+  Escape Sequence - A two or three character string staring with ESCape.
+  (Four or more character strings are allowed but not defined.)
+
+  Control Sequence - A string starting with CSI (233 octal, 9B hex) or
+  with ESCape Left-Bracket, and terminated by an alphabetic character.
+  Any number of parameter characters (digits 0 to 9, semicolon, and
+  question mark) may appear within the Control Sequence.  The terminating
+  character may be preceded by an intermediate character (such as space).
+Character classifications:
+
+C0 Control	000-037 octal, 00-1F hex  (G0 is 041-176 octal, 21-7E hex)
+SPACE		040+240 octal, 20+A0 hex  Always and everywhere a blank space
+Intermediate	040-057 octal, 20-2F hex   !"#$%&'()*+,-./
+Parameters	060-077 octal, 30-3F hex  0123456789:;<=>?
+Uppercase	100-137 octal, 40-5F hex  @ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_
+Lowercase	140-176 octal, 60-7E hex  `abcdefghijlkmnopqrstuvwxyz{|}~
+Alphabetic	100-176 octal, 40-7E hex  (all of upper and lower case)
+Delete		    177 octal,    7F hex  Always and everywhere ignored
+C1 Control	200-237 octal, 80-9F hex  32 additional control characters
+G1 Displayable	241-376 octal, A1-FE hex  94 additional displayable characters
+Special		240+377 octal, A0+FF hex  Same as SPACE and DELETE
+
+Note that in this paper, the terms uppercase, lowercase, and alphabetics
+include more characters than just A to Z.
+
+------------------------------------------------------------------------------
+
+General rules for interpreting an ESCape Sequence:
+
+  An ESCape Sequence starts with the ESC character (033 octal, 1B hex).
+The length of the ESCape Sequence depends on the character that immediately
+follows the ESCape.
+
+If the next character is
+   C0 control:	 Interpret it first, then resume processing ESCape sequence.
+     Example:  CR, LF, XON, and XOFF work as normal within an ESCape sequence.
+   Intermediate: Expect zero or more intermediates, a parameter terminates
+     a private function, an alphabetic terminates a standard sequence.
+     Example:  ESC ( A defines standard character set, ESC ( 0 a DEC set.
+   Parameter:	 End of a private 2-character escape sequence.
+     Example:  ESC = sets special keypad mode, ESC > clears it.
+   Uppercase:	 Translate it into a C1 control character and act on it.
+     Example:  ESC D does indexes down, ESC M indexes up.  (CSI is special)
+   Lowercase:	 End of a standard 2-character escape sequence.
+     Example:  ESC c resets the terminal.
+   Delete:	 Ignore it, and continue interpreting the ESCape sequence
+   C1 and G1:	 Treat the same as their 7-bit counterparts
+
+  Note that CSI is the two-character sequence ESCape left-bracket or the 8-bit
+C1 code of 233 octal, 9B hex.  CSI introduces a Control Sequence, which
+continues until an alphabetic character is received.
+
+General rules for interpreting a Control Sequence:
+
+1) It starts with CSI, the Control Sequence Introducer.
+2) It contains any number of parameter characters (0123456789:;<=>?).
+3) It terminates with an alphabetic character.
+4) Intermediate characters (if any) immediately precede the terminator.
+
+If the first character after CSI is one of "<=>?" (074-077 octal, 3C-3F hex),
+then Control Sequence is to be interpreted according to private standards (such
+as setting and resetting modes not defined by ANSI).  The terminal should
+expect any number of numeric parameters, separated by semicolons (073 octal,
+3B hex).  Only after the terminating alphabetic character is received should
+the terminal act on the Control Sequence.
+
+=============================================================================
+    C0 set of 7-bit control characters (from ANSI X3.4-1977).
+
+Oct Hex Name *	(* marks function used in DEC VT series or LA series terminals)
+--- -- - --- -	--------------------------------------------------------------
+000 00 @ NUL *	Null filler, terminal should ignore this character
+001 01 A SOH	Start of Header
+002 02 B STX	Start of Text, implied end of header
+003 03 C ETX	End of Text, causes some terminal to respond with ACK or NAK
+004 04 D EOT	End of Transmission
+005 05 E ENQ *	Enquiry, causes terminal to send ANSWER-BACK ID
+006 06 F ACK	Acknowledge, usually sent by terminal in response to ETX
+007 07 G BEL *	Bell, triggers the bell, buzzer, or beeper on the terminal
+010 08 H BS  *	Backspace, can be used to define overstruck characters
+011 09 I HT  *	Horizontal Tabulation, move to next predetermined position
+012 0A J LF  *	Linefeed, move to same position on next line (see also NL)
+013 0B K VT  *	Vertical Tabulation, move to next predetermined line
+014 0C L FF  *	Form Feed, move to next form or page
+015 0D M CR  *	Carriage Return, move to first character of current line
+016 0E N SO  *	Shift Out, switch to G1 (other half of character set)
+017 0F O SI  *	Shift In, switch to G0 (normal half of character set)
+020 10 P DLE	Data Link Escape, interpret next control character specially
+021 11 Q XON *	(DC1) Terminal is allowed to resume transmitting
+022 12 R DC2	Device Control 2, causes ASR-33 to activate paper-tape reader
+023 13 S XOFF*	(DC2) Terminal must pause and refrain from transmitting
+024 14 T DC4	Device Control 4, causes ASR-33 to deactivate paper-tape reader
+025 15 U NAK	Negative Acknowledge, used sometimes with ETX and ACK
+026 16 V SYN	Synchronous Idle, used to maintain timing in Sync communication
+027 17 W ETB	End of Transmission block
+030 18 X CAN *	Cancel (makes VT100 abort current escape sequence if any)
+031 19 Y EM	End of Medium
+032 1A Z SUB *	Substitute (VT100 uses this to display parity errors)
+033 1B [ ESC *	Prefix to an ESCape sequence
+034 1C \ FS	File Separator
+035 1D ] GS	Group Separator
+036 1E ^ RS  *	Record Separator (sent by VT132 in block-transfer mode)
+037 1F _ US	Unit Separator
+
+040 20	 SP  *	Space (should never be defined to be otherwise)
+177 7F	 DEL *	Delete, should be ignored by terminal
+
+==============================================================================
+    C1 set of 8-bit control characters (from ANSI X3.64-1979)
+
+Oct Hex Name *	(* marks function used in DEC VT series or LA series terminals)
+--- -- - --- -	--------------------------------------------------------------
+200 80 @	Reserved for future standardization
+201 81 A	Reserved
+202 82 B	Reserved
+203 83 C	Reserved
+204 84 D IND *	Index, moves down one line same column regardless of NL
+205 85 E NEL *	NEw Line, moves done one line and to first column (CR+LF)
+206 86 F SSA	Start of Selected Area to be sent to auxiliary output device
+207 87 G ESA	End of Selected Area to be sent to auxiliary output device
+210 88 H HTS *	Horizontal Tabulation Set at current position
+211 89 I HTJ	Hor Tab Justify, moves string to next tab position
+212 8A J VTS	Vertical Tabulation Set at current line
+213 8B K PLD	Partial Line Down (subscript)
+214 8C L PLU	Partial Line Up (superscript)
+215 8D M RI  *	Reverse Index, go up one line, reverse scroll if necessary
+216 8E N SS2 *	Single Shift to G2
+217 8F O SS3 *	Single Shift to G3 (VT100 uses this for sending PF keys)
+220 90 P DCS *	Device Control String, terminated by ST (VT125 enters graphics)
+221 91 Q PU1	Private Use 1
+222 92 R PU2	Private Use 2
+223 93 S STS	Set Transmit State
+224 94 T CCH	Cancel CHaracter, ignore previous character
+225 95 U MW	Message Waiting, turns on an indicator on the terminal
+226 96 V SPA	Start of Protected Area
+227 97 W EPA	End of Protected Area
+230 98 X	Reserved for for future standard
+231 99 Y	Reserved
+232 9A Z     *	Reserved, but causes DEC terminals to respond with DA codes
+233 9B [ CSI *	Control Sequence Introducer (described in a seperate table)
+234 9C \ ST  *	String Terminator (VT125 exits graphics)
+235 9D ] OSC	Operating System Command (reprograms intelligent terminal)
+236 9E ^ PM	Privacy Message (password verification), terminated by ST
+237 9F _ APC	Application Program Command (to word processor), term by ST
+
+==============================================================================
+    Character set selection sequences (from ANSI X3.41-1974)
+    All are 3 characters long (including the ESCape).  Alphabetic characters
+    as 3rd character are defined by ANSI, parameter characters as 3rd character
+    may be interpreted differently by each terminal manufacturer.
+
+Oct Hex   *	(* marks function used in DEC VT series or LA series terminals)
+--- -- -- - ------------------------------------------------------------------
+040 20	    ANNOUNCER - Determines whether to use 7-bit or 8-bit ASCII
+	A   G0 only will be used.  Ignore SI, SO, and G1.
+	B   G0 and G1 used internally.  SI and SO affect G0, G1 is ignored.
+	C   G0 and G1 in an 8-bit only environment.  SI and SO are ignored.
+	D   G0 and G1 are used, SI and SO affect G0.
+	E
+	F * 7-bit transmission, VT240/PRO350 sends CSI as two characters ESC [
+	G * 8-bit transmission, VT240/PRO350 sends CSI as single 8-bit character
+041 21 !    Select C0 control set (choice of 63 standard, 16 private)
+042 22 "    Select C1 control set (choice of 63 standard, 16 private)
+043 23 #    Translate next character to a special single character
+       #3 * DECDHL1 - Double height line, top half
+       #4 * DECDHL2 - Double height line, bottom half
+       #5 * DECSWL - Single width line
+       #6 * DECDWL - Double width line
+       #7 * DECHCP - Make a hardcopy of the graphics screen (GIGI,VT125,VT241)
+       #8 * DECALN - Alignment display, fill screen with "E" to adjust focus
+044 24 $    MULTIBYTE CHARACTERS - Displayable characters require 2-bytes each
+045 25 %    SPECIAL INTERPRETATION - Such as 9-bit data
+046 26 &    Reserved for future standardization
+047 27 '    Reserved for future standardization
+050 28 (  * SCS - Select G0 character set (choice of 63 standard, 16 private)
+       (0 * DEC VT100 line drawing set (affects lowercase characters)
+       (1 * DEC Alternate character ROM set (RAM set on GIGI and VT220)
+       (2 * DEC Alternate character ROM set with line drawing
+       (5 * DEC Finnish on LA100
+       (6 * DEC Norwegian/Danish on LA100
+       (7 * DEC Swedish on LA100
+       (9 * DEC French Canadian
+       (< * DEC supplemental graphics (everything not in USASCII)
+       (A * UKASCII (British pound sign)
+       (B * USASCII (American pound sign)
+       (C * ISO Finnish on LA120
+       (E * ISO Norwegian/Danish on LA120
+       (H * ISO Swedish on LA120
+       (K * ISO German on LA100,LA120
+       (R * ISO French on LA100,LA120
+       (Y * ISO Italian on LA100
+       (Z * ISO Spanish on LA100
+051 29 )  * SCS - Select G1 character set (choice of 63 standard, 16 private)
+          * (same character sets as listed under G0)
+052 2A *  * SCS - Select G2 character set
+          * (same character sets as listed under G0)
+053 2B +  * SCS - Select G3 character set
+          * (same character sets as listed under G0)
+054 2C ,    SCS - Select G0 character set (additional 63+16 sets)
+055 2D -    SCS - Select G1 character set (additional 63+16 sets)
+056 2E .    SCS - Select G2 character set
+057 2F /    SCS - Select G3 character set
+
+==============================================================================
+    Private two-character escape sequences (allowed by ANSI X3.41-1974)
+    These can be defined differently by each terminal manufacturer.
+
+Oct Hex  *	(* marks function used in DEC VT series or LA series terminals)
+--- -- - - ------------------------------------------------------------------
+060 30 0
+061 31 1   DECGON graphics on for VT105, DECHTS horiz tab set for LA34/LA120
+062 32 2   DECGOFF graphics off VT105, DECCAHT clear all horz tabs LA34/LA120
+063 33 3   DECVTS  - set vertical tab for LA34/LA120
+064 34 4   DECCAVT - clear all vertical tabs for LA34/LA120
+065 35 5 * DECXMT  - Host requests that VT132 transmit as if ENTER were pressed
+066 36 6
+067 37 7 * DECSC   - Save cursor position and character attributes
+070 38 8 * DECRC   - Restore cursor and attributes to previously saved position
+071 39 9
+072 3A :
+073 3B ;
+074 3C < * DECANSI - Switch from VT52 mode to VT100 mode
+075 3D = * DECKPAM - Set keypad to applications mode (ESCape instead of digits)
+076 3E > * DECKPNM - Set keypad to numeric mode (digits intead of ESCape seq)
+077 3F ?
+
+    DCS Device Control Strings used by DEC terminals (ends with ST)
+
+Pp = Start ReGIS graphics (VT125, GIGI, VT240, PRO350)
+Pq = Start SIXEL graphics (screen dump to LA34, LA100, screen load to VT125)
+Pr = SET-UP data for GIGI, $PrVC0$\ disables both visible cursors.
+Ps = Reprogram keys on the GIGI, $P0sDIR<CR>$\ makes keypad 0 send "DIR<CR>"
+	0-9=digits on keypad, 10=ENTER, 11=minus, 12=comma, 13=period,
+	14-17=PF1-PF4, 18-21=cursor keys.  Enabled by $[?23h (PK1).
+Pt = Start VT105 graphics on a VT125
+
+==============================================================================
+
+    Standard two-character escape sequences (defined by ANSI X3.64-1979)
+
+100 40 @ See description of C1 control characters
+	 An ESCape followed by one of these uppercase characters is translated
+	 to an 8-bit C1 control character before being interpreted.
+220 90 P DCS - Device Control String, terminated by ST - see table above.
+133 5B [ CSI - Control Sequence Introducer - see table below.
+137 5F _ See description of C1 control characters
+
+==============================================================================
+
+    Indepenent control functions (from Appendix E of X3.64-1977).
+    These four controls have the same meaning regardless of the current
+    definition of the C0 and C1 control sets.  Each control is a two-character
+    ESCape sequence, the 2nd character is lowercase.
+
+Oct Hex  *  	(* marks function used in DEC VT series or LA series terminals)
+--- -- - - --------------------------------------------------------------------
+140 60 `   DMI - Disable Manual Input
+141 61 a   INT - INTerrupt the terminal and do special action
+142 62 b   EMI - Enable Manual Input
+143 63 c * RIS - Reset to Initial State (VT100 does a power-on reset)
+  ...            The remaining lowercase characters are reserved by ANSI.
+153 6B k   NAPLPS lock-shift G1 to GR
+154 6C l   NAPLPS lock-shift G2 to GR
+155 6D m   NAPLPS lock-shift G3 to GR
+156 6E n * LS2 - Shift G2 to GL (extension of SI) VT240,NAPLPS
+157 6F o * LS3 - Shift G3 to GL (extension of SO) VT240,NAPLPS
+  ...            The remaining lowercase characters are reserved by ANSI.
+174 7C | * LS3R - VT240 lock-shift G3 to GR
+175 7D } * LS2R - VT240 lock-shift G2 to GR
+176 7E ~ * LS1R - VT240 lock-shift G1 to GR
+
+==============================================================================
+    Control Sequences (defined by ANSI X3.64-1979)
+
+Control Sequences are started by either ESC [ or CSI and are terminated by an
+"alphabetic" character (100 to 176 octal, 40 to 7E hex).  Intermediate
+characters are space through slash (40 to 57 octal, 20 to 2F hex) and parameter
+characters are zero through question mark (60 to 77 octal, 30 to 3F hex,
+including digits and semicolon).  Parameters consist of zero or more decimal
+numbers separated by semicolons.  Leading zeros are optional, leading blanks
+are not allowed.  If no digits precede the final character, the default
+parameter is used.  Many functions treat a parameter of 0 as if it were 1.
+
+Oct Hex  *  	(* marks function used in DEC VT series or LA series terminals)
+--- -- - - --------------------------------------------------------------------
+100 40 @   ICH - Insert CHaracter
+		[10@ = Make room for 10 characters at current position
+101 41 A * CUU - CUrsor Up
+	 *	[A = Move up one line, stop at top of screen, [9A = move up 9
+102 42 B * CUD - CUrsor Down
+	 *	[B = Move down one line, stop at bottom of screen
+103 43 C * CUF - CUrsor Forward
+	 *	[C = Move forward one position, stop at right edge of screen
+104 44 D * CUB - CUrsor Backward
+	 *	[D = Same as BackSpace, stop at left edge of screen
+105 45 E   CNL - Cursor to Next Line
+		[5E = Move to first position of 5th line down
+106 46 F   CPL - Cursor to Previous Line
+		[5F = Move to first position of 5th line previous
+107 47 G   CHA - Cursor Horizontal position Absolute
+		[40G = Move to column 40 of current line
+110 48 H * CUP - CUrsor Position
+	 *	[H = Home, [24;80H = Row 24, Column 80
+111 49 I   CHT - Cursor Horizontal Tabulation
+		[I = Same as HT (Control-I), [3I = Go forward 3 tabs
+112 4A J * ED  - Erase in Display (cursor does not move)
+	 *	[J = [0J = Erase from current position to end (inclusive)
+	 *	[1J = Erase from beginning to current position (inclusive)
+	 *	[2J = Erase entire display
+	 *	[?0J = Selective erase in display ([?1J, [?2J similar)
+113 4B K * EL  - Erase in Line (cursor does not move)
+	 *	[K = [0K = Erase from current position to end (inclusive)
+	 *	[1K = Erase from beginning to current position
+	 *	[2K = Erase entire current line
+	 *	[?0K = Selective erase to end of line ([?1K, [?2K similar)
+114 4C L * IL  - Insert Line, current line moves down (VT102 series)
+		[3L = Insert 3 lines if currently in scrolling region
+115 4D M * DL  - Delete Line, lines below current move up (VT102 series)
+		[2M = Delete 2 lines if currently in scrolling region
+116 4E N   EF  - Erase in Field (as bounded by protected fields)
+		[0N, [1N, [2N act like [L but within currend field
+117 4F O   EA  - Erase in qualified Area (defined by DAQ)
+		[0O, [1O, [2O act like [J but within current area
+120 50 P * DCH - Delete Character, from current position to end of field
+		[4P = Delete 4 characters, VT102 series
+121 51 Q   SEM - Set Editing extent Mode (limits ICH and DCH)
+		[0Q = [Q = Insert/delete character affects rest of display
+		[1Q = ICH/DCH affect the current line only
+		[2Q = ICH/DCH affect current field (between tab stops) only
+		[3Q = ICH/DCH affect qualified area (between protected fields)
+122 52 R * CPR - Cursor Position Report (from terminal to host)
+	 *	[24;80R = Cursor is positioned at line 24 column 80
+123 53 S   SU  - Scroll up, entire display is moved up, new lines at bottom
+		[3S = Move everything up 3 lines, bring in 3 new lines
+124 54 T   SD  - Scroll down, new lines inserted at top of screen
+		[4T = Scroll down 4, bring previous lines back into view
+125 55 U   NP  - Next Page (if terminal has more than 1 page of memory)
+		[2U = Scroll forward 2 pages
+126 56 V   PP  - Previous Page (if terminal remembers lines scrolled off top)
+		[1V = Scroll backward 1 page
+127 57 W   CTC - Cursor Tabulation Control
+		[0W = Set horizontal tab for current line at current position
+		[1W = Set vertical tab stop for current line of current page
+		[2W = Clear horiz tab stop at current position of current line
+		[3W = Clear vert tab stop at current line of current page
+		[4W = Clear all horiz tab stops on current line only
+		[5W = Clear all horiz tab stops for the entire terminal
+		[6W = Clear all vert tabs stops for the entire terminal
+130 58 X   ECH - Erase CHaracter
+		[4X = Change next 4 characters to "erased" state
+131 59 Y   CVT - Cursor Vertical Tab
+		[2Y = Move forward to 2nd following vertical tab stop
+132 5A Z   CBT - Cursor Back Tab
+		[3Z = Move backwards to 3rd previous horizontal tab stop
+133 5B [	Reserved for future standardization     left bracket
+134 5C \	Reserved                                reverse slant
+135 5D ]	Reserved                                right bracket
+136 5E ^	Reserved                                circumflex
+137 5F _	Reserved                                underscore
+140 60 ` * HPA - Horizontal Position Absolute (depends on PUM)
+		[720` = Move to 720 decipoints (1 inch) from left margin
+	 *	[80` = Move to column 80 on LA120
+141 61 a * HPR - Horizontal Position Relative (depends on PUM)
+		[360a = Move 360 decipoints (1/2 inch) from current position
+	 *	[40a = Move 40 columns to right of current position on LA120
+142 62 b   REP - REPeat previous displayable character
+		[80b = Repeat character 80 times
+143 63 c * DA  - Device Attributes
+	 *	[c = Terminal will identify itself
+	 *	[?1;2c = Terminal is saying it is a VT100 with AVO
+	 *	[>0c = Secondary DA request (distinguishes VT240 from VT220)
+144 64 d * VPA - Vertical Position Absolute (depends on PUM)
+		[90d = Move to 90 decipoints (1/8 inch) from top margin
+	 *	[10d = Move to line 10 if before that else line 10 next page
+145 65 e * VPR - Vertical Position Relative (depends on PUM)
+		[720e = Move 720 decipoints (1 inch) down from current position
+	 *	[6e = Advance 6 lines forward on LA120
+146 66 f * HVP - Horizontal and Vertical Position (depends on PUM)
+		[720,1440f = Move to 1 inch down and 2 inches over (decipoints)
+	 *	[24;80f = Move to row 24 column 80 if PUM is set to character
+147 67 g * TBC - Tabulation Clear
+	 *	[0g = Clear horizontal tab stop at current position
+	 *	[1g = Clear vertical tab stop at current line (LA120)
+	 *	[2g = Clear all horizontal tab stops on current line only LA120
+	 *	[3g = Clear all horizontal tab stops in the terminal
+150 68 h * SM  - Set Mode (. means permanently set on VT100)
+		[0h = Error, this command is ignored
+	 *	[1h = GATM - Guarded Area Transmit Mode, send all (VT132)
+		[2h = KAM - Keyboard Action Mode, disable keyboard input
+		[3h = CRM - Control Representation Mode, show all control chars
+	 *	[4h = IRM - Insertion/Replacement Mode, set insert mode (VT102)
+		[5h = SRTM - Status Report Transfer Mode, report after DCS
+	 *	[6h = ERM - ERasure Mode, erase protected and unprotected
+		[7h = VEM - Vertical Editing Mode, IL/DL affect previous lines
+		[8h, [9h are reserved
+		[10h = HEM - Horizontal Editing mode, ICH/DCH/IRM go backwards
+		[11h = PUM - Positioning Unit Mode, use decipoints for HVP/etc
+	 .	[12h = SRM - Send Receive Mode, transmit without local echo
+		[13h = FEAM - Format Effector Action Mode, FE's are stored
+		[14h = FETM - Format Effector Transfer Mode, send only if stored
+		[15h = MATM - Multiple Area Transfer Mode, send all areas
+	 *	[16h = TTM - Transmit Termination Mode, send scrolling region
+		[17h = SATM - Send Area Transmit Mode, send entire buffer
+		[18h = TSM - Tabulation Stop Mode, lines are independent
+		[19h = EBM - Editing Boundry Mode, all of memory affected
+	 *	[20h = LNM - Linefeed Newline Mode, LF interpreted as CR LF
+	 *	[?1h = DECCKM - Cursor Keys Mode, send ESC O A for cursor up
+	 *	[?2h = DECANM - ANSI Mode, use ESC < to switch VT52 to ANSI
+	 *	[?3h = DECCOLM - COLumn mode, 132 characters per line
+	 *	[?4h = DECSCLM - SCrolL Mode, smooth scrolling
+	 *	[?5h = DECSCNM - SCreeN Mode, black on white background
+	 *	[?6h = DECOM - Origin Mode, line 1 is relative to scroll region
+	 *	[?7h = DECAWM - AutoWrap Mode, start newline after column 80
+	 *	[?8h = DECARM - Auto Repeat Mode, key will autorepeat
+	 *	[?9h = DECINLM - INterLace Mode, interlaced for taking photos
+	 *	[?10h = DECEDM - EDit Mode, VT132 is in EDIT mode
+	 *	[?11h = DECLTM - Line Transmit Mode, ignore TTM, send line
+		[?12h = ?
+	 *	[?13h = DECSCFDM - Space Compression/Field Delimiting on,
+	 *	[?14h = DECTEM - Transmit Execution Mode, transmit on ENTER
+		[?15h = ?
+	 *	[?16h = DECEKEM - Edit Key Execution Mode, EDIT key is local
+		[?17h = ?
+	 *	[?18h = DECPFF - Print FormFeed mode, send FF after printscreen
+	 *	[?19h = DECPEXT - Print Extent mode, print entire screen
+	 *	[?20h = OV1 - Overstrike, overlay characters on GIGI
+	 *	[?21h = BA1 - Local BASIC, GIGI to keyboard and screen
+	 *	[?22h = BA2 - Host BASIC, GIGI to host computer
+	 *	[?23h = PK1 - GIGI numeric keypad sends reprogrammable sequences
+	 *	[?24h = AH1 - Autohardcopy before erasing or rolling GIGI screen
+	 *	[?29h =     - Use only the proper pitch for the LA100 font
+	 *	[?38h = DECTEK - TEKtronix mode graphics
+151 69 i * MC  - Media Copy (printer port on VT102)
+	 *	[0i = Send contents of text screen to printer
+		[1i = Fill screen from auxiliary input (printer's keyboard)
+		[2i = Send screen to secondary output device
+		[3i = Fill screen from secondary input device
+	 *	[4i = Turn on copying received data to primary output (VT125)
+	 *	[4i = Received data goes to VT102 screen, not to its printer
+	 *	[5i = Turn off copying received data to primary output (VT125)
+	 *	[5i = Received data goes to VT102's printer, not its screen
+	 *	[6i = Turn off copying received data to secondary output (VT125)
+	 *	[7i = Turn on copying received data to secondary output (VT125)
+	 *	[?0i = Graphics screen dump goes to graphics printer VT125,VT240
+	 *	[?1i = Print cursor line, terminated by CR LF
+	 *	[?2i = Graphics screen dump goes to host computer VT125,VT240
+	 *	[?4i = Disable auto print
+	 *	[?5i = Auto print, send a line at a time when linefeed received
+152 6A j	Reserved for future standardization
+153 6B k	Reserved for future standardization
+154 6C l * RM  - Reset Mode (. means permanently reset on VT100)
+	 *	[1l = GATM - Transmit only unprotected characters (VT132)
+	 .	[2l = KAM - Enable input from keyboard
+	 .	[3l = CRM - Control characters are not displayable characters
+	 *	[4l = IRM - Reset to replacement mode (VT102)
+	 .	[5l = SRTM - Report only on command (DSR)
+	 *	[6l = ERM - Erase only unprotected fields
+	 .	[7l = VEM - IL/DL affect lines after current line
+		[8l, [9l are reserved
+	 .	[10l = HEM - ICH and IRM shove characters forward, DCH pulls
+	 .	[11l = PUM - Use character positions for HPA/HPR/VPA/VPR/HVP
+		[12l = SRM - Local echo - input from keyboard sent to screen
+	 .	[13l = FEAM - HPA/VPA/SGR/etc are acted upon when received
+	 .	[14l = FETM - Format Effectors are sent to the printer
+		[15l = MATM - Send only current area if SATM is reset
+	 *	[16l = TTM - Transmit partial page, up to cursor position
+		[17l = SATM - Transmit areas bounded by SSA/ESA/DAQ
+	 .	[18l = TSM - Setting a tab stop on one line affects all lines
+	 .	[19l = EBM - Insert does not overflow to next page
+	 *	[20l = LNM - Linefeed does not change horizontal position
+	 *	[?1l = DECCKM - Cursor keys send ANSI cursor position commands
+	 *	[?2l = DECANM - Use VT52 emulation instead of ANSI mode
+	 *	[?3l = DECCOLM - 80 characters per line (erases screen)
+	 *	[?4l = DECSCLM - Jump scrolling
+	 *	[?5l = DECSCNM - Normal screen (white on black background)
+	 *	[?6l = DECOM - Line numbers are independent of scrolling region
+	 *	[?7l = DECAWM - Cursor remains at end of line after column 80
+	 *	[?8l = DECARM - Keys do not repeat when held down
+	 *	[?9l = DECINLM - Display is not interlaced to avoid flicker
+	 *	[?10l = DECEDM - VT132 transmits all key presses
+	 *	[?11l = DECLTM - Send page or partial page depending on TTM
+		[?12l = ?
+	 *	[?13l = DECSCFDM - Don't suppress trailing spaces on transmit
+	 *	[?14l = DECTEM - ENTER sends ESC S (STS) a request to send
+		[?15l = ?
+	 *	[?16l = DECEKEM - EDIT key transmits either $[10h or $[10l
+		[?17l = ?
+	 *	[?18l = DECPFF - Don't send a formfeed after printing screen
+	 *	[?19l = DECPEXT - Print only the lines within the scroll region
+	 *	[?20l = OV0 - Space is destructive, replace not overstrike, GIGI
+	 *	[?21l = BA0 - No BASIC, GIGI is On-Line or Local
+	 *	[?22l = BA0 - No BASIC, GIGI is On-Line or Local
+	 *	[?23l = PK0 - Ignore reprogramming on GIGI keypad and cursors
+	 *	[?24l = AH0 - No auto-hardcopy when GIGI screen erased
+	 *	[?29l = Allow all character pitches on the LA100
+	 *	[?38l = DECTEK - Ignore TEKtronix graphics commands
+155 6D m * SGR - Set Graphics Rendition (affects character attributes)
+	 *	[0m = Clear all special attributes
+	 *	[1m = Bold or increased intensity
+	 *	[2m = Dim or secondary color on GIGI  (superscript on XXXXXX)
+		[3m = Italic                          (subscript on XXXXXX)
+	 *	[4m = Underscore, [0;4m = Clear, then set underline only
+	 *	[5m = Slow blink
+		[6m = Fast blink                      (overscore on XXXXXX)
+	 *	[7m = Negative image, [0;1;7m = Bold + Inverse
+		[8m = Concealed (do not display character echoed locally)
+		[9m = Reserved for future standardization
+	 *	[10m = Select primary font (LA100)
+	 *	[11m - [19m = Selete alternate font (LA100 has 11 thru 14)
+		[20m = FRAKTUR (whatever that means)
+	 *	[22m = Cancel bold or dim attribute only (VT220)
+	 *	[24m = Cancel underline attribute only (VT220)
+	 *	[25m = Cancel fast or slow blink attribute only (VT220)
+	 *	[27m = Cancel negative image attribute only (VT220)
+	 *	[30m = Write with black,   [40m = Set background to black (GIGI)
+	 *	[31m = Write with red,     [41m = Set background to red
+	 *	[32m = Write with green,   [42m = Set background to green
+	 *	[33m = Write with yellow,  [43m = Set background to yellow
+	 *	[34m = Write with blue,    [44m = Set background to blue
+	 *	[35m = Write with magenta, [45m = Set background to magenta
+	 *	[36m = Write with cyan,    [46m = Set background to cyan
+	 *	[37m = Write with white,   [47m = Set background to white
+		[38m, [39m, [48m, [49m are reserved
+156 6E n * DSR - Device Status Report
+	 *	[0n = Terminal is ready, no malfunctions detected
+		[1n = Terminal is busy, retry later
+		[2n = Terminal is busy, it will send DSR when ready
+	 *	[3n = Malfunction, please try again
+		[4n = Malfunction, terminal will send DSR when ready
+	 *	[5n = Command to terminal to report its status
+	 *	[6n = Command to terminal requesting cursor position (CPR)
+	 *	[?15n = Command to terminal requesting printer status, returns
+		        [?10n = OK, [?11n = not OK, [?13n = no printer.
+	 *	[?25n = "Are User Defined Keys Locked?" (VT220)
+157 6F o   DAQ - Define Area Qualification starting at current position
+		[0o = Accept all input, transmit on request
+		[1o = Protected and guarded, accept no input, do not transmit
+		[2o = Accept any printing character in this field
+		[3o = Numeric only field
+		[4o = Alphabetic (A-Z and a-z) only
+		[5o = Right justify in area
+		[3;6o = Zero fill in area
+		[7o = Set horizontal tab stop, this is the start of the field
+		[8o = Protected and unguarded, accept no input, do transmit
+		[9o = Space fill in area
+
+==============================================================================
+
+    Private Control Sequences (allowed by ANSI X3.41-1974).
+    These take parameter strings and terminate with the last half of lowercase.
+
+Oct Hex  *  	(* marks function used in DEC VT series or LA series terminals)
+--- -- - - --------------------------------------------------------------------
+160 70 p * DECSTR - Soft Terminal Reset
+		[!p = Soft Terminal Reset
+161 71 q * DECLL - Load LEDs
+		[0q = Turn off all, [?1;4q turns on L1 and L4, etc
+		[154;155;157q = VT100 goes bonkers
+		[2;23!q = Partial screen dump from GIGI to graphics printer
+		[0"q = DECSCA Select Character Attributes off
+		[1"q = DECSCA - designate set as non-erasable
+		[2"q = DECSCA - designate set as erasable
+162 72 r * DECSTBM - Set top and bottom margins (scroll region on VT100)
+		[4;20r = Set top margin at line 4 and bottom at line 20
+163 73 s * DECSTRM - Set left and right margins on LA100,LA120
+		[5;130s = Set left margin at column 5 and right at column 130
+164 74 t * DECSLPP - Set physical lines per page
+		[66t = Paper has 66 lines (11 inches at 6 per inch)
+165 75 u * DECSHTS - Set many horizontal tab stops at once on LA100
+		[9;17;25;33;41;49;57;65;73;81u = Set standard tab stops
+166 76 v * DECSVTS - Set many vertical tab stops at once on LA100
+		[1;16;31;45v = Set vert tabs every 15 lines
+167 77 w * DECSHORP - Set horizontal pitch on LAxxx printers
+		[1w = 10 characters per inch, [2w = 12 characters per inch
+		[0w=10, [3w=13.2, [4w=16.5, [5w=5, [6w=6, [7w=6.6, [8w=8.25
+170 78 x * DECREQTPARM - Request terminal parameters
+		[3;5;2;64;64;1;0x = Report, 7 bit Even, 1200 baud, 1200 baud
+171 79 y * DECTST - Invoke confidence test
+		[2;1y = Power-up test on VT100 series (and VT100 part of VT125)
+		[3;1y = Power-up test on GIGI (VK100)
+		[4;1y = Power-up test on graphics portion of VT125
+172 7A z * DECVERP - Set vertical pitch on LA100
+		[1z = 6 lines per inch, [2z = 8 lines per inch
+		[0z=6, [3z=12, [4z=3, [5z=3, [6z=4
+173 7B {   Private
+174 7C | * DECTTC - Transmit Termination Character
+		[0| = No extra characters, [1| = terminate with FF
+175 7D } * DECPRO - Define protected field on VT132
+		[0} = No protection, [1;4;5;7} = Any attribute is protected
+		[254} = Characters with no attributes are protected
+176 7E ~ * DECKEYS - Sent by special function keys
+		[1~=FIND, [2~=INSERT, [3~=REMOVE, [4~=SELECT, [5~=PREV, [6~=NEXT
+		[17~=F6...[34~=F20 ([23~=ESC,[24~=BS,[25~=LF,[28~=HELP,[29~=DO)
+177 7F DELETE is always ignored
+
+==============================================================================
+    Control Sequences with intermediate characters (from ANSI X3.64-1979).
+    Note that there is a SPACE character before the terminating alphabetic.
+
+Oct Hex  *  	(* marks function used in DEC VT series or LA series terminals)
+--- -- - - --------------------------------------------------------------------
+100 40 @   SL  - Scroll Left
+		[4 @ = Move everything over 4 columns, 4 new columns at right
+101 41 A   SR  - Scroll Right
+		[2 A = Move everything over 2 columns, 2 new columns at left
+102 42 B   GSM - Graphic Size Modification
+		[110;50 B = Make 110% high, 50% wide
+103 43 C   GSS - Graphic Size Selection
+		[120 C = Make characters 120 decipoints (1/6 inch) high
+104 44 D   FNT - FoNT selection (used by SGR, [10m thru [19m)
+		[0;23 D = Make primary font be registered font #23
+105 45 E   TSS - Thin Space Specification
+		[36 E = Define a thin space to be 36 decipoints (1/20 inch)
+106 46 F   JFY - JustiFY, done by the terminal/printer
+		[0 E = No justification
+		[1 E = Fill, bringing words up from next line if necessary
+		[2 E = Interword spacing, adjust spaces between words
+		[3 E = Letter spacing, adjust width of each letter
+		[4 E = Use hyphenation
+		[5 E = Flush left margin
+		[6 E = Center following text between margins (until [0 E)
+		[7 E = Flush right margin
+		[8 E = Italian form (underscore instead of hyphen)
+107 47 G   SPI - SPacing Increment (in decipoints)
+		[120;72 G = 6 per inch vertical, 10 per inch horizontal
+110 48 H   QUAD- Do quadding on current line of text (typography)
+		[0 H = Flush left,  [1 H = Flush left and fill with leader
+		[2 H = Center,      [3 H = Center and fill with leader
+		[4 H = Flush right, [5 H = Flush right and fill with leader
+111 49 I   Reserved for future standardization
+157 67 o   Reserved for future standardization
+160 70 p   Private use
+  ...		May be defined by the printer manufacturer
+176 7E ~   Private use
+177 7F DELETE is always ignored
+
+==============================================================================
+Minimum requirements for VT100 emulation:
+
+1) To act as a passive display, implement the 4 cursor commands, the 2 erase
+   commands, direct cursor addressing, and at least inverse characters.
+   The software should be capable of handling strings with 16 numeric parameters
+   with values in the range of 0 to 255.
+
+  [A      Move cursor up one row, stop if a top of screen
+  [B      Move cursor down one row, stop if at bottom of screen
+  [C      Move cursor forward one column, stop if at right edge of screen
+  [D      Move cursor backward one column, stop if at left edge of screen
+  [H      Home to row 1 column 1 (also [1;1H)
+  [J      Clear from current position to bottom of screen
+  [K      Clear from current position to end of line
+  [24;80H Position to line 24 column 80 (any line 1 to 24, any column 1 to 132)
+  [0m     Clear attributes to normal characters
+  [7m     Add the inverse video attribute to succeeding characters
+  [0;7m   Set character attributes to inverse video only
+
+2) To enter data in VT100 mode, implement the 4 cursor keys and the 4 PF keys.
+   It must be possible to enter ESC, TAB, BS, DEL, and LF from the keyboard.
+
+  [A       Sent by the up-cursor key (alternately ESC O A)
+  [B       Sent by the down-cursor key (alternately ESC O B)
+  [C       Sent by the right-cursor key (alternately ESC O C)
+  [D       Sent by the left-cursor key (alternately ESC O D)
+  OP       PF1 key sends ESC O P
+  OQ       PF2 key sends ESC O Q
+  OR       PF3 key sends ESC O R
+  OS       PF3 key sends ESC O S
+  [c       Request for the terminal to identify itself
+  [?1;0c   VT100 with memory for 24 by 80, inverse video character attribute
+  [?1;2c   VT100 capable of 132 column mode, with bold+blink+underline+inverse
+
+3) When doing full-screen editing on a VT100, implement directed erase, the
+   numeric keypad in applications mode, and the limited scrolling region.
+   The latter is needed to do insert/delete line functions without rewriting
+   the screen.
+
+  [0J     Erase from current position to bottom of screen inclusive
+  [1J     Erase from top of screen to current position inclusive
+  [2J     Erase entire screen (without moving the cursor)
+  [0K     Erase from current position to end of line inclusive
+  [1K     Erase from beginning of line to current position inclusive
+  [2K     Erase entire line (without moving cursor)
+  [12;24r   Set scrolling region to lines 12 thru 24.  If a linefeed or an
+            INDex is received while on line 24, the former line 12 is deleted
+            and rows 13-24 move up.  If a RI (reverse Index) is received while
+            on line 12, a blank line is inserted there as rows 12-13 move down.
+            All VT100 compatible terminals (except GIGI) have this feature.
+  ESC =   Set numeric keypad to applications mode
+  ESC >   Set numeric keypad to numbers mode
+  OA      Up-cursor key    sends ESC O A after ESC = ESC [ ? 1 h
+  OB      Down-cursor key  sends ESC O B    "      "         "
+  OC      Right-cursor key sends ESC O B    "      "         "
+  OB      Left-cursor key  sends ESC O B    "      "         "
+  OM      ENTER key        sends ESC O M after ESC =
+  Ol      COMMA on keypad  sends ESC O l    "      "   (that's lowercase L)
+  Om      MINUS on keypad  sends ESC O m    "      "
+  Op      ZERO on keypad   sends ESC O p    "      "
+  Oq      ONE on keypad    sends ESC O q    "      "
+  Or      TWO on keypad    sends ESC O r    "      "
+  Os      THREE on keypad  sends ESC O s    "      "
+  Ot      FOUR on keypad   sends ESC O t    "      "
+  Ou      FIVE on keypad   sends ESC O u    "      "
+  Ov      SIX on keypad    sends ESC O v    "      "
+  Ow      SEVEN on keypad  sends ESC O w    "      "
+  Ox      EIGHT on keypad  sends ESC O x    "      "
+  Oy      NINE on keypad   sends ESC O y    "      "
+
+4) If the hardware is capable of double width/double height:
+
+  #3     Top half of a double-width double-height line
+  #4     Bottom half of a double-width double-height line
+  #5     Make line single-width (lines are set this way when cleared by ESC [ J)
+  #6     Make line double-width normal height (40 or 66 characters)
+
+5) If the terminal emulator is capable of insert/delete characters,
+insert/delete lines, insert/replace mode, and can do a full-screen dump to
+the printer (in text mode), then it should identify itself as a VT102
+
+  [c     Request for the terminal to identify itself
+  [?6c   VT102 (printer port, 132 column mode, and ins/del standard)
+  [1@    Insert a blank character position (shift line to the right)
+  [1P    Delete a character position (shift line to the left)
+  [1L    Insert blank line at current row (shift screen down)
+  [1M    Delete the current line (shift screen up)
+  [4h    Set insert mode, new characters shove existing ones to the right
+  [4l    Reset insert mode, new characters replace existing ones
+  [0i    Print screen (all 24 lines) to the printer
+  [4i    All received data goes to the printer (nothing to the screen)
+  [5i    All received data goes to the screen (nothing to the printer)
+
+
+[End of ANSICODE.TXT]
diff --git a/src/log.c b/src/log.c
index c5760d2..65860f3 100644
--- a/src/log.c
+++ b/src/log.c
@@ -10,6 +10,9 @@ static char rcsid[] = "$Id$";
 
 /*
  * $Log$
+ * Revision 1.2  2008/02/22 14:51:54  james
+ * *** empty log message ***
+ *
  * Revision 1.1  2008/02/14 12:14:50  james
  * *** empty log message ***
  *
@@ -20,6 +23,7 @@ static char rcsid[] = "$Id$";
 typedef struct
 {
   LOG_SIGNATURE;
+  int do_close;
   FILE *fp;
 } File_Log;
 
@@ -53,11 +57,14 @@ flog_log (Log * _l, char *buf)
   fflush (l->fp);
 }
 
+
+
+
 static void
 flog_close (Log * _l)
 {
   File_Log *l = (File_Log *) _l;
-  if (l->fp)
+  if (l->fp && l->do_close)
     fclose (l->fp);
   free (l);
 }
@@ -67,16 +74,64 @@ file_log_new (char *fn)
 {
   File_Log *l;
   FILE *f;
+  int dc=1;
 
+  if (fn && strcmp(fn,"-")) {
   f = fopen (fn, "a+");
   if (!f)
     return NULL;
+  } else {
+	f=stderr;
+	dc=0;
+  }
 
   l = malloc (sizeof (File_Log));
 
   l->log = flog_log;
   l->close = flog_close;
   l->fp = f;
+  l->do_close=dc;
 
   return (Log *) l;
 }
+void 
+log_f (Log *log,char *fmt, ...)
+{
+
+  int n;
+  static char *buf;
+  va_list ap;
+  static int size;
+
+  if (!log) return;
+
+  if (!size) {
+  size = 128;
+  buf = malloc (size);
+  }
+
+  if (!buf)
+    return;
+
+  while (1)
+    {
+      va_start (ap, fmt);
+      n = vsnprintf (buf , size, fmt, ap);
+      va_end (ap);
+
+      if (n > -1 && n < size) {
+	log->log(log,buf);
+	return; 
+      }
+
+      if (n > -1)               /* glibc 2.1 */
+        size = n + 1;
+      else                      /* glibc 2.0 */
+        size *= 2;              /* twice the old size */
+
+      buf = realloc (buf, size);
+
+      if (!buf)
+	return;
+    }
+}
diff --git a/src/project.h b/src/project.h
index 1f46906..8d5def2 100644
--- a/src/project.h
+++ b/src/project.h
@@ -12,6 +12,9 @@
 
 /*
  * $Log$
+ * Revision 1.10  2008/02/22 14:51:54  james
+ * *** empty log message ***
+ *
  * Revision 1.9  2008/02/13 18:05:06  james
  * *** empty log message ***
  *
@@ -94,6 +97,8 @@
 #include <utmp.h>
 #include <pty.h>
 
+#include <stdarg.h>
+
 #include "sympathy.h"
 
 #endif /* __PROJECT_H__ */
diff --git a/src/prototypes.h b/src/prototypes.h
index 0f71766..89ada5d 100644
--- a/src/prototypes.h
+++ b/src/prototypes.h
@@ -25,6 +25,7 @@ extern void vt102_do_pending_wrap(Context *c);
 extern void vt102_cursor_retard(VT102 *v);
 extern void vt102_reset_tabs(VT102 *v);
 extern void vt102_cursor_advance_tab(VT102 *v);
+extern void vt102_cursor_retard_tab(VT102 *v);
 extern int vt102_cursor_home(VT102 *v);
 extern int vt102_cursor_absolute(VT102 *v, int x, int y);
 extern int vt102_cursor_relative(VT102 *v, int x, int y);
@@ -36,6 +37,7 @@ extern void vt102_change_attr(VT102 *v, char *na);
 extern void vt102_parse_attr_string(VT102 *v, char *buf, int len);
 extern void vt102_save_state(VT102 *v);
 extern void vt102_restore_state(VT102 *v);
+extern void vt102_regular_char(Context *c, VT102 *v, char ch);
 extern void vt102_scs(Context *c, int g, int s);
 extern void vt102_parse_esc(Context *c, int ch);
 extern void vt102_parse_csi(Context *c, char *buf, int len);
@@ -88,6 +90,7 @@ extern void raw_termios(struct termios *termios);
 extern void default_termios(struct termios *termios);
 /* log.c */
 extern Log *file_log_new(char *fn);
+extern void log_f(Log *log, char *fmt, ...);
 /* ipc.c */
 extern IPC_Msg *ipc_check_for_message_in_slide(Slide *s);
 extern void ipc_consume_message_in_slide(Slide *s);
diff --git a/src/ptty.c b/src/ptty.c
index 1e3ce36..0c69a2b 100644
--- a/src/ptty.c
+++ b/src/ptty.c
@@ -10,6 +10,9 @@ static char rcsid[] = "$Id$";
 
 /*
  * $Log$
+ * Revision 1.6  2008/02/22 14:51:54  james
+ * *** empty log message ***
+ *
  * Revision 1.5  2008/02/15 23:52:12  james
  * *** empty log message ***
  *
@@ -142,7 +145,7 @@ ptty_open (char *path, char *argv[])
     case -1:                   /*boo hiss */
       return NULL;
     case 0:                    /*waaah */
-      setenv ("TERM", "vt102", 1);
+      setenv ("TERM", "ansi", 1);
       setenv ("LANG", "C", 1);
       if (!path)
         path = "/bin/sh";
diff --git a/src/vt102.c b/src/vt102.c
index 586b7d9..d74437f 100644
--- a/src/vt102.c
+++ b/src/vt102.c
@@ -10,6 +10,9 @@ static char rcsid[] = "$Id$";
 
 /*
  * $Log$
+ * Revision 1.30  2008/02/22 14:51:54  james
+ * *** empty log message ***
+ *
  * Revision 1.29  2008/02/15 03:32:07  james
  * *** empty log message ***
  *
@@ -102,6 +105,8 @@ static char rcsid[] = "$Id$";
 
 /* Termcap he say:
 
+VT102:
+
 vt102|dec vt102:\
         :mi:\
         :al=\E[L:dc=\E[P:dl=\E[M:ei=\E[4l:im=\E[4h:tc=vt100:
@@ -192,12 +197,77 @@ ESC)0
 
 CTRL-O
 
+ANSI:
+
+
+
+ansi|ansi/pc-term compatible with color:\
+        :u6=\E[%i%d;%dR:u7=\E[6n:u9=\E[c:tc=ecma+color:\
+        :tc=klone+sgr:tc=ansi-m:
+ansi-m|ansi-mono|ANSI X3.64-1979 terminal with ANSI.SYS compatible attributes:\
+        :5i:\
+        :AL=\E[%dL:DC=\E[%dP:DL=\E[%dM:DO=\E[%dB:IC=\E[%d@:\
+        :LE=\E[%dD:RI=\E[%dC:SF=\E[%dS:SR=\E[%dT:UP=\E[%dA:\
+        :cb=\E[1K:ch=\E[%i%dG:ct=\E[2g:cv=\E[%i%dd:ec=\E[%dX:ei=:\
+        :im=:kB=\E[Z:kI=\E[L:kb=^H:kd=\E[B:kl=\E[D:kr=\E[C:ku=\E[A:\
+        :nw=\r\E[S:pf=\E[4i:po=\E[5i:s0=\E(B:s1=\E)B:s2=\E*B:\
+        :s3=\E+B:ta=\E[I:tc=pcansi-m:
+pcansi-m|pcansi-mono|ibm-pc terminal programs claiming to be ansi (mono mode):\
+        :am:bs:mi:ms:\
+        :co#80:it#8:li#24:\
+        :al=\E[L:bl=^G:bt=\E[Z:cd=\E[J:ce=\E[K:cl=\E[H\E[J:\
+        :cm=\E[%i%d;%dH:cr=^M:ct=\E[2g:dc=\E[P:dl=\E[M:do=\E[B:\
+        :ho=\E[H:kb=^H:kd=\E[B:kh=\E[H:kl=\E[D:kr=\E[C:ku=\E[A:\
+        :le=\E[D:nd=\E[C:sf=^J:st=\EH:ta=^I:up=\E[A:\
+        :tc=klone+sgr-dumb:
+klone+sgr-dumb|attribute control for ansi.sys displays (no ESC [ 11 m):\
+        :as=\E[12m:mb=\E[5m:md=\E[1m:me=\E[0;10m:mk=\E[8m:\
+        :mr=\E[7m:se=\E[m:so=\E[7m:ue=\E[m:us=\E[4m:tc=klone+acs:
+klone+acs|alternate character set for ansi.sys displays:\
+        :ac=+\020,\021-\030.^Y0\333`\004a\261f\370g\361h\260j\331k\277l\332m\300n\305o~p\304q\304r\304s_t\303u\264v\301w\302x\263y\363z\362{\343|\330}\234~\376:\
+        :ae=\E[10m:as=\E[11m:
+ecma+color|color control for ECMA-48-compatible terminals:\
+        :Co#8:NC#3:pa#64:\
+        :AB=\E[4%dm:AF=\E[3%dm:op=\E[39;49m:
+
+
+Ignoreing ones in the VT102 spec
+
+ESC[%d@
+ESC[I
+ESC[....R
+ESC[%dS
+ESC[%dT
+ESC[X
+ESC[Z
+
+ESC[c
+*ESC[%db
+ESC[....d
+ESC[....f
+ESC[2g
+ESC[4i
+ESC[5i
+ESC[6n
+
+ESC(B
+ESC)B
+ESC*B
+ESC+B
+
 
 */
 
 #include "project.h"
+#include "syslog.h"
 
 
+static inline int
+safe_ch(int c) {
+if (c<32) return ' ';
+if (c>126) return ' ';
+return c;
+}
 
 static inline int
 csi_ender (int c)
@@ -216,6 +286,8 @@ scs_starter (int c)
     {
     case '(':
     case ')':
+    case '+':
+    case '*':
       return 1;
     }
   return 0;
@@ -348,28 +420,12 @@ vt102_cursor_advance_line (Context * c)
       return;
     }
 
-  v->pos.y++;
+  if (v->pos.y!=v->screen_end.y) v->pos.y++;
   v->pending_wrap = 0;
 }
 
 
 void
-vt102_cursor_advance (Context * c)
-{
-  VT102 *v = c->v;
-
-  if (v->pos.x < v->bottom_margin.x)
-    {
-/*Normal advance*/
-      v->pos.x++;
-      v->pending_wrap = 0;
-      return;
-    }
-  v->pending_wrap++;
-}
-
-
-void
 vt102_do_pending_wrap (Context * c)
 {
   VT102 *v = c->v;
@@ -404,6 +460,24 @@ vt102_do_pending_wrap (Context * c)
   vt102_cursor_advance_line (c);
 }
 
+void
+vt102_cursor_advance (Context * c)
+{
+  VT102 *v = c->v;
+
+  if (v->pos.x < v->bottom_margin.x)
+    {
+/*Normal advance*/
+      v->pos.x++;
+      v->pending_wrap = 0;
+      return;
+    }
+  v->pending_wrap++;
+  if (c->v->xn_glitch)
+  	vt102_do_pending_wrap(c);
+}
+
+
 
 void
 vt102_cursor_retard (VT102 * v)
@@ -440,6 +514,20 @@ vt102_cursor_advance_tab (VT102 * v)
   v->pending_wrap = 0;
 }
 
+void
+vt102_cursor_retard_tab (VT102 * v)
+{
+  if (v->pos.x == v->top_margin.x)
+    return;
+  while (v->pos.x > v->top_margin.x)
+    {
+      v->pos.x--;
+      if (v->tabs[v->pos.x])
+        break;
+    }
+  v->pending_wrap = 0;
+}
+
 vt102_cursor_home (VT102 * v)
 {
   v->pos = v->top_margin;
@@ -790,6 +878,23 @@ vt102_restore_state (VT102 * v)
 }
 
 void
+vt102_regular_char (Context * c, VT102 * v, char ch)
+{
+
+  vt102_do_pending_wrap (c);
+
+  if (v->modes[VT102_MODE_INSERT])
+    vt102_insert_into_line (v, v->pos);
+
+  v->crt.screen[CRT_ADDR_POS (&v->pos)].chr = ch;
+  v->crt.screen[CRT_ADDR_POS (&v->pos)].attr = v->attr;
+  v->crt.screen[CRT_ADDR_POS (&v->pos)].color = v->color;
+  vt102_cursor_advance (c);
+
+  v->last_reg_char = ch;
+}
+
+void
 vt102_scs (Context * c, int g, int s)
 {
 /*Ignoring charsets*/
@@ -839,10 +944,8 @@ vt102_parse_esc (Context * c, int ch)
       v->application_keypad_mode = 0;
       break;
     default:
-#if 0
-      fprintf (stderr, "unhandled ESC \\033 \\%03o (ESC %c)\n", ch,
-               (ch < 32) ? '?' : ch);
-#endif
+      log_f (c->l, "<%s:%d unhandled ESC: \\033 \\%03o (ESC %c)>", __FILE__,__LINE__,ch,safe_ch(ch));
+
       ;
     }
 }
@@ -877,12 +980,18 @@ vt102_parse_csi (Context * c, char *buf, int len)
     case '[':
       switch (last)
         {
+        case '@':
+          while (narg--)
+            vt102_insert_into_line (v, v->pos);
+          break;
         case 'A':
           vt102_cursor_relative (v, 0, -narg);
           break;
+        case 'e':
         case 'B':
           vt102_cursor_relative (v, 0, narg);
           break;
+        case 'a':
         case 'C':
           vt102_cursor_relative (v, narg, 0);
           break;
@@ -916,12 +1025,21 @@ vt102_parse_csi (Context * c, char *buf, int len)
             vt102_cursor_absolute (v, x, y);
           }
           break;
+        case 'I':
+          while (narg--)
+            vt102_cursor_advance_tab (c->v);
+          break;
         case 'J':
+            if (len == 2)
+              narg = 0;         /*Different default */
           switch (narg)
             {
-            case 1:
+            case 0:
               crt_erase (&v->crt, v->pos, v->screen_end, 1);
               break;
+            case 1:
+              crt_erase (&v->crt, v->screen_start, v->pos, 1);
+              break;
             case 2:
               crt_erase (&v->crt, v->screen_start, v->screen_end, 1);
               break;
@@ -949,10 +1067,6 @@ vt102_parse_csi (Context * c, char *buf, int len)
           }
           break;
 
-        case 'P':
-          while (narg--)
-            vt102_delete_from_line (v, v->pos);
-          break;
         case 'L':
           if ((v->pos.y >= v->top_margin.y)
               && (v->pos.y <= v->bottom_margin.y))
@@ -973,7 +1087,53 @@ vt102_parse_csi (Context * c, char *buf, int len)
                 }
             }
           break;
+        case 'P':
+          while (narg--)
+            vt102_delete_from_line (v, v->pos);
+          break;
+        case 'R':
+          //FIXME: cursor position report - does anything use that?
+          break;
+        case 'S':
+          while (narg--)
+            {
+              vt102_history (c, v->top_margin, v->bottom_margin);
+              crt_scroll_up (&v->crt, v->top_margin, v->bottom_margin, 1);
+            }
+          break;
+        case 'T':
+          while (narg--)
+            crt_scroll_down (&v->crt, v->top_margin, v->bottom_margin, 1);
+          break;
+        case 'X':
+          {
+            CRT_Pos end = v->pos;
+	    if (!narg) narg++;
 
+            end.x += narg-1;
+            if (end.x > v->bottom_margin.x)
+              end.x = v->bottom_margin.x;
+
+            crt_erase (&v->crt, v->pos, end, 1);
+          }
+          break;
+        case 'Z':
+          while (narg--)
+            vt102_cursor_retard_tab (c->v);
+          break;
+        case '`':
+          vt102_cursor_absolute (v, narg - 1, v->pos.y);
+          break;
+        case 'b':
+          while (narg--)
+            vt102_regular_char (c, v, v->last_reg_char);
+          break;
+        case 'c':
+          //FIXME:
+          break;
+        case 'd':
+          vt102_cursor_absolute (v, v->pos.x, narg - 1);
+          break;
         case 'g':
           if (len == 2)
             narg = 0;           /*Different default */
@@ -983,20 +1143,28 @@ vt102_parse_csi (Context * c, char *buf, int len)
             case 0:
               v->tabs[v->pos.x] = 0;
               break;
+            case 2:            //FIXME: - LA120 says current line only WTF?
             case 3:
               memset (v->tabs, 0, sizeof (v->tabs));
               break;
             }
           break;
 
+        case 'i':              //4,5 Turn printer on and off WTF?
+          //FIXME
+          break;
         case 'h':
         case 'l':
           vt102_parse_mode_string (v, &buf[1], len - 1);
           break;
 
+
         case 'm':
           vt102_parse_attr_string (v, &buf[1], len - 1);
           break;
+        case 'n':              // 6 request cursor position
+          //FIXME 
+          break;
         case 'r':
           v->top_margin = v->screen_start;
           v->bottom_margin = v->screen_end;
@@ -1029,16 +1197,13 @@ vt102_parse_csi (Context * c, char *buf, int len)
           break;
 
         default:
-#if 0
-          fprintf (stderr, "unhandled CSI  \\033%s\n", buf, buf[0]);
-#endif
+      log_f (c->l, "<%s:%d unhandled CSI: \\033%s>", __FILE__,__LINE__,buf);
+
           ;
         }
       break;
     default:
-#if 0
-      fprintf (stderr, "unhandled CSI  \\033%s\n", buf, buf[0]);
-#endif
+      log_f (c->l, "<%s:%d unhandled sequence: \\033%s>", __FILE__,__LINE__,buf);
       ;
     }
 
@@ -1071,44 +1236,45 @@ vt102_parse_char (Context * c, int ch)
   VT102 *v = c->v;
   VT102_parser *p = &v->parser;
 
-#if 0
-  fprintf (stderr, "char %c pc %d %d %d   %d %d\n", (c < 32) ? 32 : c, c,
-           p->in_csi, p->in_escape, v->pos.x, v->pos.y);
+#if 1
+  log_f (c->l, "char %3d %c pc %d %d     %2d %2d %d",ch,safe_ch(ch),
+           p->in_csi, p->in_escape, v->pos.x, v->pos.y,v->pending_wrap);
 #endif
   if (p->in_csi)
     {
       p->csi_buf[p->csi_ptr++] = ch;
       if (csi_ender (ch) || (p->csi_ptr == VT102_CSI_LEN))
         {
-          vt102_parse_csi (c, p->csi_buf, p->csi_ptr);
+          if (csi_starter (p->csi_buf[0]))
+            {
+              vt102_parse_csi (c, p->csi_buf, p->csi_ptr);
+            }
+          else if (scs_starter (p->csi_buf[0]))
+            {
+              vt102_scs (c, p->csi_buf[0], p->csi_buf[1]);
+            }
+          else
+            {
+      log_f (c->l, "<%s:%d no dispatcher for sequence starting \\033 \\%03o (ESC %c)>", __FILE__,__LINE__,p->csi_buf[0],safe_ch(p->csi_buf[0]));
+            }
           p->in_csi = 0;
         }
     }
   else if (p->in_escape)
     {
-      if (csi_starter (ch))
+      if (csi_starter (ch) || scs_starter (ch))
         {
           p->csi_ptr = 0;
           p->csi_buf[p->csi_ptr++] = ch;
           p->in_csi++;
           p->in_escape = 0;
         }
-      else if (scs_starter (ch))
-        {
-          p->in_scs = ch;
-          p->in_escape = 0;
-        }
       else
         {
           p->in_escape = 0;
           vt102_parse_esc (c, ch);
         }
     }
-  else if (p->in_scs)
-    {
-      vt102_scs (c, p->in_scs, ch);
-      p->in_scs = 0;
-    }
   else
     {
 
@@ -1121,6 +1287,7 @@ vt102_parse_char (Context * c, int ch)
          /*EOT*/ case 4:
           break;
          /*ENQ*/ case 5:
+	  if (c->t)
           c->t->xmit (c->t, "vt102", 5);
           break;
          /*ACK*/ case 6:
@@ -1171,15 +1338,7 @@ vt102_parse_char (Context * c, int ch)
          /*DEL*/ case 127:
           break;
         /*regular character */ default:
-          vt102_do_pending_wrap (c);
-
-          if (v->modes[VT102_MODE_INSERT])
-            vt102_insert_into_line (v, v->pos);
-
-          v->crt.screen[CRT_ADDR_POS (&v->pos)].chr = ch;
-          v->crt.screen[CRT_ADDR_POS (&v->pos)].attr = v->attr;
-          v->crt.screen[CRT_ADDR_POS (&v->pos)].color = v->color;
-          vt102_cursor_advance (c);
+          vt102_regular_char (c, v, ch);
         }
     }
 
@@ -1210,7 +1369,6 @@ vt102_parser_reset (VT102_parser * p)
   p->in_csi = 0;
   p->in_escape = 0;
   p->csi_ptr = 0;
-  p->in_scs = 0;
 }
 
 
@@ -1422,6 +1580,10 @@ vt102_reset (VT102 * v)
 
   vt102_status_line (v, "");
 
+  v->last_reg_char = ' ';
+
+  v->xn_glitch=0;
+
 }
 
 int
diff --git a/src/vt102.h b/src/vt102.h
index 4f5ff05..7537969 100644
--- a/src/vt102.h
+++ b/src/vt102.h
@@ -12,6 +12,9 @@
 
 /*
  * $Log$
+ * Revision 1.12  2008/02/22 14:51:54  james
+ * *** empty log message ***
+ *
  * Revision 1.11  2008/02/08 15:06:42  james
  * *** empty log message ***
  *
@@ -64,7 +67,6 @@ typedef struct
   int in_csi;
   int csi_ptr;
   char csi_buf[VT102_CSI_LEN];
-  int in_scs;
 } VT102_parser;
 
 typedef struct
@@ -97,6 +99,9 @@ typedef struct
 
   int application_keypad_mode;
 
+  char last_reg_char;
+
+  int xn_glitch;
 
 } VT102;