ANSI/ECMA Terminal Output Sequences
                          ===================================
ANSI terminal sequences are <esc> followed by one or more characters. What are most
commonly called ANSI escape sequences are ANSI-X3.41/ANSI-X3.64/ECMA-48 control
sequences. They are sometimes also called VT terminal sequences as the DEC VT series
of terminals were some of the earliest to implement them, starting with the VT50.

Sequences are split into three general groups:
  <esc>{&00-&3F}   ie <esc><spc> to <esc>? - digits and punctuation
  <esc>{&40-&5F}   ie <esc>@ to <esc>_     - upper case letters
  <esc>{&60-&7F}   ie <esc>` to <esc>~     - lower case letters

                   ANSI-X3.41 Upper-Case Terminal Escape Sequences
                   -----------------------------------------------
         These are VT52 sequences, VT100 and later interpret them differently
<esc>@
<esc>A 	Cursor up 		Move cursor one line upwards, halts on top line.
<esc>B 	Cursor down 		Move cursor one line downwards, halts on bottom line.
<esc>C 	Cursor right 		Move cursor one column to the right, halts at right edge.
<esc>D 	Cursor left 		Move cursor one column to the left, halts at left edge.
<esc>E 	Clear screen 		Clear screen and place cursor at top left corner.
<esc>F
<esc>G
<esc>H 	Cursor home 		Move cursor to the upper left corner.
<esc>I 	Cursor up and insert 	Move cursor one line upwards and scroll if top line.
<esc>J 	Clear to end of screen 	Clear screen from cursor onwards.
<esc>K 	Clear to end of line 	Clear line from cursor onwards.
<esc>L 	Insert line 		Insert a line.
<esc>M 	Delete line 		Remove line.
<esc>N
<esc>O
<esc>P
<esc>Q
<esc>R
<esc>S
<esc>T
<esc>U
<esc>V
<esc>W
<esc>X
<esc>Y<32+y><32+x> 		Set cursor position counting from (0,0).
<esc>Z
<esc>[  Control Sequence Introducer - starts ANSI-X3-64/EMCA-48 control sequence.
<esc>\
<esc>]
<esc>^
<esc>_

                  ANSI-X3.64/ECMA-48 CSI Terminal Control Sequences
                  -------------------------------------------------
ANSI CSI terminal control sequences are <esc>[ followed by between zero and 16 8-bit
numeric parameters, separated by ; and terminated with a letter, where <esc> is CHR$27,
eg "<esc>[3;4H" or "<esc>[2;33;45m". Omitted parameters default to 0. Where 0 would do
nothing it is taken as 1, for example "<esc>[A", "<esc>[0A", and "<esc>[1A" all move up
1 character position.

A control sequence can start with a character '<', '=', '>' or '?' before the parameters,
for instance "<esc>[=3h". These are private sequences specific to the output device. For
instance, "<esc>[?...<letter>" are private VT sequences.

                      * commonly supported  - less commonly supported
<esc>[<num>@          - Insert <num> spaces, characters pushed to the right
<esc>[<num>A          * Move cursor up <num> places
<esc>[<num>B          * Move cursor down <num> places
<esc>[<num>C          * Move cursor right <num> places
<esc>[<num>D          * Move cursor left <num> places
<esc>[<num>E          * Move cursor to start of line <num> lines down
<esc>[<num>F          * Move cursor to start of line <num> lines up
<esc>[<col>G          * Move cursor to <col>,<thisrow>, counting from 1
<esc>[<row>;<col>H    * Move cursor to (<col>,<row>), counting from (1,1)
<esc>[<num>I            Move cursor right <num> tabs
<esc>[<num>J          * Clear display: 0=cursor to end
                                       1=start to cursor
                                       2=whole screen
                        Cursor position afterwards is undefined, host should send new
                        cursor position. <esc>[2J<esc>[H should do a conventional 'CLS'.
<esc>[<num>K          * Clear in line: 0=cursor to end
                                       1=start to cursor
                                       2=whole line
                        Cursor position unchanged.
<esc>[<num>L          - Insert <num> lines at cursor, pushing lines down
<esc>[<num>M          - Delete <num> lines at cursor, pulling lines up
<esc>[<num>N            Erase in field
<esc>[<num>O            Erase in qualified field
<esc>[<num>P          - Delete <num> characters on current line
<esc>[<num>Q            Set editing mode extent
<esc>[R               * Report cursor position as <esc>[<row>;<col>R, counting from (1,1)
<esc>[<num>S          * Scroll up <num> lines
<esc>[<num>T          * Scroll down <num> lines
<esc>[<num>U          - Next page, <num> is pages to jump forward
<esc>[<num>V          - Previous page, <num> is pages to jump back
<esc>[<num>W            Set/Clear tabs
<esc>[<num>X          - Erase <num> characters on current line
<esc>[<num>Y            Move cursor to next <num> tab
<esc>[<num>Z            Move cursor to previous <num> tab
<esc>[<num>...[         Reserved                        Start reversed string
<esc>[<num>...\         Reserved                        Parallel text
<esc>[<num>...]       - Private control sequence        Start directed string
<esc>[<num>...^         Reserved                        Select movement direction
<esc>[<num>..._         Reserved

<esc>[<num>`          - Move cursor to <col>,<thisrow> characters or pixels
<esc>[<num>a          - Move cursor right <num> characters or pixels
<esc>[<num>b            Repeat previous character <num> times
<esc>[c               - Query device, returns <esc>[<num>...c
<esc>[<row>d          - Move cursor to <thiscol>,<row> character or pixel position
<esc>[<num>e          - Move cursor down <num> characters or pixels
<esc>[<row>;<col>f    - Move cursor to (<col>,<row>) character or pixel
<esc>[<num>g          - Clear tabs, 0=clear horizontal tab at current position
                                    1=clear vertical tab at current position
                                    2=clear all hozisontal tabs on current line
                                    3=clear all tabs
<esc>[<num>h          - Set display mode, varies by device
<esc>[<num>i          - AUX port/printer control, varies by device, common are:
                        0=print screen   1=print current line  2=send to host,
                        4=reset printer  5=set printer         6=start printer
                        7=stop printer
<esc>[<num>...j         Reserved                        Character position backward
<esc>[<num>...k         Reserved                        Line position backward
<esc>[<num>l          - Reset display mode, reverses <esc>[<num>h setting
<esc>[<num>...m       * Set attributes and colours, defaults to 0
<esc>[<num>n          - Device status, reports <esc>[<num>h setting
                        5=reports status as <esc>[<num>n 0=ok, 1=busy, 2=busy, 3=failure
                        6=reports cursor position as <esc>[<row>;<col>R, counting from 1
<esc>[<num>o            Define area
<esc>[<num>;"string"p - Set keyboard strings
<esc>[<num>q          - Set LEDs, Disable/Enable X support
                        0=all off  1=ScrollLock  2=NumLock  3=CapsLock  20+n=LED off
<esc>[<a>;<b>r        - Set scrolling region between row <a> and row <b>, counting from 1
<esc>[s               * Save cursor position
<esc>[t               * Do stuff with windows
<esc>[u               * Restore ("unsave") cursor position
<esc>[v
<esc>[w
<esc>[x
<esc>[y
<esc>[z
<esc>[{
<esc>[|
<esc>[}
<esc>[~

ANSI colour codes for <esc>[...m
--------------------------------
  0+n * turn attribute on
 10+n * select font
 20+n * turn attribute off
 30+n * foreground colour
 40+n * background colour
 90+n - bright foreground colour
100+n - bright background colour

Attributes
  0   reset all attributes and colours   20 
  1   bold on                            21  bold off (*note)
  2   faint on                           22  faint off
  3   italics on                         23  italics off
  4   underline on                       24  underline off
  5   blink on (slow)                    25  blink off
  6   blink on (rapid)                   26  blink off
  7   inverse on                         27  inverse off
  8   conceal on                         28  conceal off
  9   strikethrough on                   29  strikethrough off

Colours
 30  black foreground                    40  black background
 31  red foreground                      41  red background
 32  green foreground                    42  green background
 33  yellow foreground                   43  yellow background
 34  blue foreground                     44  blue background
 35  magenta foreground                  45  magenta background
 36  cyan foreground                     46  cyan background
 37  white foreground                    47  white background
 38  extended foreground colour          48  extended background colour
 39  default foreground                  49  default background

 90  bright black foreground            100 bright black background
 91  bright red foreground              101 bright red background
 92  bright green foreground            102 bright green background
 93  bright yellow foreground           103 bright yellow background
 94  bright blue foreground             104 bright blue background
 95  bright magenta foreground          105 bright magenta background
 96  bright cyan foreground             106 bright cyan background
 97  bright white foreground            107 bright white background

On systems with Bright selectable, <esc>[1m usually only sets bright foreground. Bright
background is typically only selectable with controls 100-107. On many systems <esc>[21m
does not turn off Bright as expected, but often turns on double-underline. This means
that the only universal method to turn Bright off is to turn off all effects and reset
colours with <esc>[0m.

On systems with Bright selectable "Dim White" and "Bright Black" are types of grey, and
"Bright Black" is sometimes the same as "Dim Black". The greyscale colours should be:

    30:Black            30;1/90:Dim Gray    37:Bright Grey      37;1/97:White
    40:Black              100:Dim Gray      47:Bright Grey        107:White

or  30:Black            30;1/90:Black       37:Bright Grey      37;1/97:White
    40:Black              100:Black         47:Bright Grey        107:White

From experimentation I've found it best to set bright foreground colours by emitting
control 30+n and the bright control, and to set bright background colours by emitting
control 40+n and control 100+n. For example:

    <esc>[34;1m   - set bright blue foreground
    <esc>[41;101m - set bright red background

Extended colours
  38/48;2;<r>;<g>;<b> to select RGB colour components 0-255
  38/48;5;<num>       to select colour <num>

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                               Other Output Sequences
                               ======================

                        Private VT Terminal Output Sequences
                        ------------------------------------
<esc>[?<num>h      - Set terminal setting
                     <esc>[?3h - Set to 132 columns
<esc>[?<num>l      - Reset terminal setting
                     <esc>[?3l - Set to 80 columns
<esc>[?<num>n      - Report setting
                     <esc>[?3n - Report number of columns


                  ANSI-X3.64/ECMA-48 Intermediate Control Sequences
                  =================================================

These have a space character before the terminating letter, ie 1B 5B ... 20 <letter>.

<esc>[<num><spc>@        scroll left
<esc>[<num><spc>A        scroll right
<esc>[<num>;<num><spc>B  graphic size modification
<esc>[<num><spc>C        graphic size selection
<esc>[<num>;<num><spc>D  font selection
<esc>[<num><spc>E        thin space specification
<esc>[<num><spc>F        justify
<esc>[<num>;<num><spc>G  spacing increment
<esc>[<num><spc>G        quad
<esc>[<num><spc>I        select size unit
<esc>[<num><spc>J        page format
<esc>[<num><spc>K        select character spacing
<esc>[<num><spc>L        select line spacing
<esc>[<num><spc>M        identify graphic subrepertoire
<esc>[<num><spc>N          
<esc>[<num><spc>O        identify device

<esc>[<num><spc>P        page position absolute
<esc>[<num><spc>Q        page position forward
<esc>[<num><spc>R        page position backward
<esc>[<num>;<num><spc>S  select presentation directions
<esc>[<num>;<num><spc>T  dimension text area
<esc>[<num><spc>U        set line home
<esc>[<num><spc>V        set line limit
<esc>[<num><spc>W        function key
<esc>[<num><spc>X        select print quality
<esc>[<num>;<num><spc>Y  sheet eject and feed
<esc>[<num><spc>Z        presentation expand or contract
<esc>[<num><spc>[        set space width
<esc>[<num><spc>\        set additional character separation
<esc>[<num><spc>]        select alternative presention
<esc>[<num><spc>^        selective tabulation
<esc>[<num><spc>_        graphic character combination

<esc>[<num><spc>`        tabulation aligned trailing edge
<esc>[<num><spc>a        tabulation aligned leading edge
<esc>[<num><spc>b        tabulation aligned centred
<esc>[<num><spc>c        tabulation centred on character
<esc>[<num><spc>d        tabulation stop remove
<esc>[<num><spc>e        select character orientation
<esc>[<num><spc>f        set reduced character separation
<esc>[<num><spc>g        set character spacing
<esc>[<num><spc>h        set line spacing
<esc>[<num><spc>i        set page home
<esc>[<num><spc>j        set page limit
<esc>[<num>;<num><spc>k  select character path
<esc>[<num><spc>l       
<esc>[<num><spc>m       
<esc>[<num><spc>n       
<esc>[<num><spc>o       


ANSI-X3.64/ECMA-48 (previous ECMA-6)

esc 40 @
esc 41 A
esc 42 B break permitted
esc 43 C no break here
esc 44 D
esc 45 E next line
esc 46 F start of selected area
esc 47 G end of selected area
esc 48 H set character tab
esc 49 I character tab with justify
esc 4A J line tabulation set
esc 4B K partial line forward
esc 4C L partial line backward
esc 4D M reverse line feed
esc 4E N single-sift two
esc 4F O single-shift three

esc 50 P device control string
esc 51 Q private use one
esc 52 R private use two
esc 53 S set transmit state
esc 54 T cancel
esc 55 U message waiting
esc 56 V start of guarded area
esc 57 W end of guarded area
esc 58 X start of string
esc 59 Y
esc 5A Z single character introducer
esc 5B [ control sequnce intro - <esc>[
esc 5C \ string terminator
esc 5D ] operating system command
esc 5E ^ privacy message
esc 5F _ command

esc 60 ` disable manual input
esc 61 a interrupt
esc 62 b enable manual input
esc 63 c reset to initial state
esc 64 d command delimiter
esc 65 e
...
esc 6D m
esc 6E n locking shift two
esc 6F o locking shift three

esc 7C | locking shift three right
esc 7D } locking shift two right
esc 7E ~ locking shift one right

X3-41 <esc>X<char>
X3-64 <esc>[...<char>

Escape sequence: <esc><char> or <esc><char><char>
Control sequence: <esc>[...<char>


                                    VT-52 sequences
                                    ===============
Code 	Name 			Meaning
BEL 	Bell 			System bell.
BS 	Backspace 		Delete character to left of cursor.
HT 	Tabulator 		Horizontal tabulator.
FF 	Formfeed 		Form feed.
VT 	Tabulator 		Vertical tabulator
LF 	Line feed 		Line feed.
CR 	Carriage Return 	Move cursor to the start of the line.
ESC =   VT420: Keypad generates <esc> sequences
ESC >   VT420: Keypad generates digits
ESC <   VT420: Enter ANSI mode
ESC ^   VT420: Enter auto print mode
ESC _   VT420: Exit auto print mode

ESC A 	Cursor up 		Move cursor one line upwards.
ESC B 	Cursor down 		Move cursor one line downwards.
ESC C 	Cursor right 		Move cursor one column to the right.
ESC D 	Cursor left 		Move cursor one column to the left.
ESC E 	Clear screen 		Clear screen and place cursor at top left corner.
ESC F   Enter graphics mode
ESC G   Exit graphics mode
ESC H 	Cursor home 		Move cursor to the upper left corner.
ESC I 	Cursor up and insert 	Move cursor one line upwards and scroll.
ESC J 	Clear to end of screen 	Clear screen from cursor onwards.
ESC K 	Clear to end of line 	Clear line from cursor onwards.
ESC L 	Insert line 		Insert a line.
ESC M 	Delete line 		Remove line.
...
ESC V   Print cursor line
ESC W   Enter printer controller mode
ESC X   Exit printer controller mode
ESC Y 	Set cursor position 	Position cursor.
ESC Z   Identify
ESC ]   Print screen

ESC b 	Foreground color 	Set text colour.
ESC c 	Background color 	Set background colour.
ESC d 	Clear to start of screen Clear screen up to cursor.
ESC e 	Cur_on 	Show cursor.
ESC f 	Cur_off 		Hide cursor.
  	Blink_on 		Switch on cursor blinking.
  	Blink_off 		Switch off cursor blinking.
  	Set_blink 		Set blink rate.
  	Get_blink 		Inquire blink rate.
ESC g
ESC h
ESC i
ESC j 	Save cursor position 	"Remember" cursor.
ESC k 	Restore cursor position Restore cursor.
ESC l 	Clear line 		Clear current line.
ESC m
ESC n
ESC o 	Clear to start of line 	Clear current line up to cursor.
ESC p 	Reverse video 		Switch on inverse video text.
ESC q 	Normal video 		Switch off inverse video text.
...
ESC v 	Wrap on 		Enable line wrap.
ESC w 	Wrap off 		Disable line wrap.


Display modes for <esc>[=<num>h
-------------------------------
  0     40 x 25 text, ANSI colours, greyscale
  1     40 x 25 text, ANSI colours           
  2     80 x 25 text, ANSI colours, greyscale
  3     80 x 25 text, ANSI colours           
  4     320 x 200 graphics, 4 colours, greyscale
  5     320 x 200 graphics, 4 colours           
  6     640 x 200 graphics, 2 colours           
  7     Enable line wrapping

 13     320 x 200 graphics, 16 colours
 14     640 x 200 graphics, 16 colours
 15     640 x 350 graphics, 2 colours
 16     640 x 350 graphics, 16 colours
 17     640 x 480 graphics, 2 colours
 18     640 x 480 graphics, 16 colours
 19     320 x 200 graphics, 256 colours

Display settings for <esc>[<num>h
---------------------------------
 4      <esc>[4h  - Insert characters,    <esc>[4l  - Overwrite characters
 7      <esc>[7h  - Enable line wrapping, <esc>[7l  - disable line wrapping
 12     <esc>[12h - Local echo off,       <esc>[12l - Local echo on
 20     <esc>[20h - Set NL,               <esc>[20l - Reset LF

Also seen:
Display modes
-------------
0	40 x 25 monochrome (text)
1	40 x 25 color (text)
2	80 x 25 monochrome (text)
3	80 x 25 color (text)
4	320 x 200 4-color (graphics)
5	320 x 200 monochrome (graphics)
6	640 x 200 monochrome (graphics)
7	Enables line wrapping
13	320 x 200 color (graphics)
14	640 x 200 color (16-color graphics)
15	640 x 350 monochrome (2-color graphics)
16	640 x 350 color (16-color graphics)
17	640 x 480 monochrome (2-color graphics)
18	640 x 480 color (16-color graphics)
19	320 x 200 color (256-color graphics)