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###############################################################################

# BRLTTY - A background process providing access to the console screen (when in

#          text mode) for a blind person using a refreshable braille display.

#

# Copyright (C) 1995-2018 by The BRLTTY Developers.

#

# BRLTTY comes with ABSOLUTELY NO WARRANTY.

#

# This is free software, placed under the terms of the

# GNU Lesser General Public License, as published by the Free Software

# Foundation; either version 2.1 of the License, or (at your option) any

# later version. Please see the file LICENSE-LGPL for details.

#

# Web Page: http://brltty.com/

#

# This software is maintained by Dave Mielke <dave@mielke.cc>.

###############################################################################

# BRLTTY Text Table - English (North American Braille Computer Code)

# This is a description of the default text table used by BRLTTY.

# It's based on the North American Braille Computer Code, but defines the full

# Latin1 (ISO-8859-1) character set.

# The 95 printable characters of the standard 7-bit US-ASCII character set

# (32-126) are identical to their representations within the North American

# Braille Computer Code (these are the only characters which the NABCC actually

# defines). Characters from literary braille, symbols from The Nemeth Braille

# Code for Mathematics and Science Notation, and a bit of human imagination

# have all been combined to create an easy-to-remember, one-to-one mapping

# between each character and its braille counterpart. All possible combinations

# involving only the original 6 braille dots are used, but that only allows for

# 64 out of the required 95 character representations. The presence or absence

# of dot 7 is used to differentiate between pairs of characters which either

# are very closely related in meaning or, in a few cases where a more intuitive

# reason couldn't be found, have a very close logical relationship within the

# US-ASCII code. Dot 8 isn't used at all.

# The space and the 26 lowercase letters (a-z) are the same as in literary

# braille:

     #Hex    Dots       Dec Char Description

char \X20 (        )  #  32      space

char \X61 (1       )  #  97   a  latin small letter a

char \X62 (12      )  #  98   b  latin small letter b

char \X63 (1  4    )  #  99   c  latin small letter c

char \X64 (1  45   )  # 100   d  latin small letter d

char \X65 (1   5   )  # 101   e  latin small letter e

char \X66 (12 4    )  # 102   f  latin small letter f

char \X67 (12 45   )  # 103   g  latin small letter g

char \X68 (12  5   )  # 104   h  latin small letter h

char \X69 ( 2 4    )  # 105   i  latin small letter i

char \X6A ( 2 45   )  # 106   j  latin small letter j

char \X6B (1 3     )  # 107   k  latin small letter k

char \X6C (123     )  # 108   l  latin small letter l

char \X6D (1 34    )  # 109   m  latin small letter m

char \X6E (1 345   )  # 110   n  latin small letter n

char \X6F (1 3 5   )  # 111   o  latin small letter o

char \X70 (1234    )  # 112   p  latin small letter p

char \X71 (12345   )  # 113   q  latin small letter q

char \X72 (123 5   )  # 114   r  latin small letter r

char \X73 ( 234    )  # 115   s  latin small letter s

char \X74 ( 2345   )  # 116   t  latin small letter t

char \X75 (1 3  6  )  # 117   u  latin small letter u

char \X76 (123  6  )  # 118   v  latin small letter v

char \X77 ( 2 456  )  # 119   w  latin small letter w

char \X78 (1 34 6  )  # 120   x  latin small letter x

char \X79 (1 3456  )  # 121   y  latin small letter y

char \X7A (1 3 56  )  # 122   z  latin small letter z

# The 26 uppercase letters (A-Z) are the same as their lowercase counterparts

# except that dot 7 is added:

     #Hex    Dots       Dec Char Description

char \X41 (1     7 )  #  65   A  latin capital letter a

char \X42 (12    7 )  #  66   B  latin capital letter b

char \X43 (1  4  7 )  #  67   C  latin capital letter c

char \X44 (1  45 7 )  #  68   D  latin capital letter d

char \X45 (1   5 7 )  #  69   E  latin capital letter e

char \X46 (12 4  7 )  #  70   F  latin capital letter f

char \X47 (12 45 7 )  #  71   G  latin capital letter g

char \X48 (12  5 7 )  #  72   H  latin capital letter h

char \X49 ( 2 4  7 )  #  73   I  latin capital letter i

char \X4A ( 2 45 7 )  #  74   J  latin capital letter j

char \X4B (1 3   7 )  #  75   K  latin capital letter k

char \X4C (123   7 )  #  76   L  latin capital letter l

char \X4D (1 34  7 )  #  77   M  latin capital letter m

char \X4E (1 345 7 )  #  78   N  latin capital letter n

char \X4F (1 3 5 7 )  #  79   O  latin capital letter o

char \X50 (1234  7 )  #  80   P  latin capital letter p

char \X51 (12345 7 )  #  81   Q  latin capital letter q

char \X52 (123 5 7 )  #  82   R  latin capital letter r

char \X53 ( 234  7 )  #  83   S  latin capital letter s

char \X54 ( 2345 7 )  #  84   T  latin capital letter t

char \X55 (1 3  67 )  #  85   U  latin capital letter u

char \X56 (123  67 )  #  86   V  latin capital letter v

char \X57 ( 2 4567 )  #  87   W  latin capital letter w

char \X58 (1 34 67 )  #  88   X  latin capital letter x

char \X59 (1 34567 )  #  89   Y  latin capital letter y

char \X5A (1 3 567 )  #  90   Z  latin capital letter z

# The 10 decimal digits (0-9) are the same as in the Nemeth Code:

     #Hex    Dots       Dec Char Description

char \X30 (  3 56  )  #  48   0  digit zero

char \X31 ( 2      )  #  49   1  digit one

char \X32 ( 23     )  #  50   2  digit two

char \X33 ( 2  5   )  #  51   3  digit three

char \X34 ( 2  56  )  #  52   4  digit four

char \X35 ( 2   6  )  #  53   5  digit five

char \X36 ( 23 5   )  #  54   6  digit six

char \X37 ( 23 56  )  #  55   7  digit seven

char \X38 ( 23  6  )  #  56   8  digit eight

char \X39 (  3 5   )  #  57   9  digit nine

# Common symbols used within mathematical expressions by popular computer

# programming languages are the same as in the Nemeth Code:

     #Hex    Dots       Dec Char Description

char \X2E (   4 6  )  #  46   .  full stop

char \X2B (  34 6  )  #  43   +  plus sign

char \X2D (  3  6  )  #  45   -  hyphen-minus

char \X2A (1    6  )  #  42   *  asterisk

char \X2F (  34    )  #  47   /  solidus

char \X28 (123 56  )  #  40   (  left parenthesis

char \X29 ( 23456  )  #  41   )  right parenthesis

# With all of these major considerations having been taken into account,

# convenient representations were still available, and are used, for some of

# the remaining characters:

     #Hex    Dots       Dec Char Description

char \X26 (1234 6  )  #  38   &  ampersand

char \X23 (  3456  )  #  35   #  number sign

# The remaining characters are what they are. Dot 7 isn't used either within

# the number block (32-63) or, with the exception of the DEL control character

# (127), within the lowercase block (96-127). With the exception of the

# underscore (95), dot 7 is used for every character within the uppercase block

# (64-95). Adding dot 7 to any character within the lowercase block (96-127)

# yields its corresponding character within the uppercase block (64-95) except

# that removing dot 7 from the DEL control character yields the underscore.

     #Hex    Dots       Dec Char Description

char \X2C (     6  )  #  44   ,  comma

char \X3B (    56  )  #  59   ;  semicolon

char \X3A (1   56  )  #  58   :  colon

char \X21 ( 234 6  )  #  33   !  exclamation mark

char \X3F (1  456  )  #  63   ?  question mark

char \X22 (    5   )  #  34   "  quotation mark

char \X27 (  3     )  #  39   '  apostrophe

char \X60 (   4    )  #  96   `  grave accent

char \X5E (   45 7 )  #  94   ^  circumflex accent

char \X7E (   45   )  # 126   ~  tilde

char \X5B ( 2 4 67 )  #  91   [  left square bracket

char \X5D (12 4567 )  #  93   ]  right square bracket

char \X7B ( 2 4 6  )  # 123   {  left curly bracket

char \X7D (12 456  )  # 125   }  right curly bracket

char \X3D (123456  )  #  61   =  equals sign

char \X3C (12   6  )  #  60   <  less-than sign

char \X3E (  345   )  #  62   >  greater-than sign

char \X24 (12 4 6  )  #  36   $  dollar sign

char \X25 (1  4 6  )  #  37   %  percent sign

char \X40 (   4  7 )  #  64   @  commercial at

char \X7C (12  56  )  # 124   |  vertical line

char \X5C (12  567 )  #  92   \  reverse solidus

char \X5F (   456  )  #  95   _  low line

# Each of the characters within the basic control character block (0-31) is the

# same as its corresponding character within both the uppercase block (64-95)

# and the lowercase block (96-127) except that dots 7 and 8 are both used.

     #Hex    Dots       Dec Char Description

char \X00 (   4  78)  #   0  ^@  null

char \X01 (1     78)  #   1  ^A  start of heading

char \X02 (12    78)  #   2  ^B  start of text

char \X03 (1  4  78)  #   3  ^C  end of text

char \X04 (1  45 78)  #   4  ^D  end of transmission

char \X05 (1   5 78)  #   5  ^E  enquiry

char \X06 (12 4  78)  #   6  ^F  acknowledge

char \X07 (12 45 78)  #   7  ^G  bell

char \X08 (12  5 78)  #   8  ^H  backspace

char \X09 ( 2 4  78)  #   9  ^I  horizontal tabulation

char \X0A ( 2 45 78)  #  10  ^J  line feed

char \X0B (1 3   78)  #  11  ^K  vertical tabulation

char \X0C (123   78)  #  12  ^L  form feed

char \X0D (1 34  78)  #  13  ^M  carriage return

char \X0E (1 345 78)  #  14  ^N  shift out

char \X0F (1 3 5 78)  #  15  ^O  shift in

char \X10 (1234  78)  #  16  ^P  data link escape

char \X11 (12345 78)  #  17  ^Q  device control one

char \X12 (123 5 78)  #  18  ^R  device control two

char \X13 ( 234  78)  #  19  ^S  device control three

char \X14 ( 2345 78)  #  20  ^T  device control four

char \X15 (1 3  678)  #  21  ^U  negative acknowledge

char \X16 (123  678)  #  22  ^V  synchronous idle

char \X17 ( 2 45678)  #  23  ^W  end of transmission block

char \X18 (1 34 678)  #  24  ^X  cancel

char \X19 (1 345678)  #  25  ^Y  end of medium

char \X1A (1 3 5678)  #  26  ^Z  substitute

char \X1B ( 2 4 678)  #  27  ^[  escape

char \X1C (12  5678)  #  28  ^\  file separator

char \X1D (12 45678)  #  29  ^]  group separator

char \X1E (   45 78)  #  30  ^^  record separator

char \X1F (   45678)  #  31  ^_  unit separator

# Each of the characters within the extended control character block (128-159)

# is the same as its corresponding character within the basic control character

# block (0-31) except that only dot 8 is used.

     #Hex    Dots       Dec Char Description

char \X80 (   4   8)  # 128  ~@  <control>

char \X81 (1      8)  # 129  ~A  <control>

char \X82 (12     8)  # 130  ~B  break permitted here

char \X83 (1  4   8)  # 131  ~C  no break here

char \X84 (1  45  8)  # 132  ~D  <control>

char \X85 (1   5  8)  # 133  ~E  next line

char \X86 (12 4   8)  # 134  ~F  start of selected area

char \X87 (12 45  8)  # 135  ~G  end of selected area

char \X88 (12  5  8)  # 136  ~H  character tabulation set

char \X89 ( 2 4   8)  # 137  ~I  character tabulation with justification

char \X8A ( 2 45  8)  # 138  ~J  line tabulation set

char \X8B (1 3    8)  # 139  ~K  partial line down

char \X8C (123    8)  # 140  ~L  partial line up

char \X8D (1 34   8)  # 141  ~M  reverse line feed

char \X8E (1 345  8)  # 142  ~N  single shift two

char \X8F (1 3 5  8)  # 143  ~O  single shift three

char \X90 (1234   8)  # 144  ~P  device control string

char \X91 (12345  8)  # 145  ~Q  private use one

char \X92 (123 5  8)  # 146  ~R  private use two

char \X93 ( 234   8)  # 147  ~S  set transmit state

char \X94 ( 2345  8)  # 148  ~T  cancel character

char \X95 (1 3  6 8)  # 149  ~U  message waiting

char \X96 (123  6 8)  # 150  ~V  start of guarded area

char \X97 ( 2 456 8)  # 151  ~W  end of guarded area

char \X98 (1 34 6 8)  # 152  ~X  start of string

char \X99 (1 3456 8)  # 153  ~Y  <control>

char \X9A (1 3 56 8)  # 154  ~Z  single character introducer

char \X9B ( 2 4 6 8)  # 155  ~[  control sequence introducer

char \X9C (12  56 8)  # 156  ~\  string terminator

char \X9D (12 456 8)  # 157  ~]  operating system command

char \X9E (   45  8)  # 158  ~^  privacy message

char \X9F (   456 8)  # 159  ~_  application program command

# Representations for the uppercase accented letters are drawn from the

# remaining combinations which use both dots 7 and 8. The representation for a

# lowercase accented letter is the same as its uppercase counterpart except

# that dot 7 isn't used. This scheme retains the use of dot 7 as the modifier

# for a capitalized letter. The only exception to these rules is that, due to

# the nature of the Latin1 character set, the German lowercase double-s is

# treated as though it were an uppercase y-dieresis (neither has an uppercase

# definition). These representations have been gathered, as much as possible,

# into logical groupings.

# The 5 letters with a circumflex accent (^) use the [1-5] dot combinations:

     #Hex    Dots       Dec Char Description

char \XC2 ( 2    78)  # 194   Â  latin capital letter a with circumflex

char \XCA ( 23   78)  # 202   Ê  latin capital letter e with circumflex

char \XCE ( 2  5 78)  # 206   Î  latin capital letter i with circumflex

char \XD4 ( 2  5678)  # 212   Ô  latin capital letter o with circumflex

char \XDB ( 2   678)  # 219   Û  latin capital letter u with circumflex

char \XE2 ( 2     8)  # 226   â  latin small letter a with circumflex

char \XEA ( 23    8)  # 234   ê  latin small letter e with circumflex

char \XEE ( 2  5  8)  # 238   î  latin small letter i with circumflex

char \XF4 ( 2  56 8)  # 244   ô  latin small letter o with circumflex

char \XFB ( 2   6 8)  # 251   û  latin small letter u with circumflex

# The 5 letters with a grave accent (`) use the [6-0] dot combinations:

     #Hex    Dots       Dec Char Description

char \XC0 ( 23 5 78)  # 192   À  latin capital letter a with grave

char \XC8 ( 23 5678)  # 200   È  latin capital letter e with grave

char \XCC ( 23  678)  # 204   Ì  latin capital letter i with grave

char \XD2 (  3 5 78)  # 210   Ò  latin capital letter o with grave

char \XD9 (  3 5678)  # 217   Ù  latin capital letter u with grave

char \XE0 ( 23 5  8)  # 224   à  latin small letter a with grave

char \XE8 ( 23 56 8)  # 232   è  latin small letter e with grave

char \XEC ( 23  6 8)  # 236   ì  latin small letter i with grave

char \XF2 (  3 5  8)  # 242   ò  latin small letter o with grave

char \XF9 (  3 56 8)  # 249   ù  latin small letter u with grave

# The 6 letters with an acute accent (') use the [a-f] dot combinations with

# dots 3 and 6 added:

     #Hex    Dots       Dec Char Description

char \XC1 (1    678)  # 193   Á  latin capital letter a with acute

char \XC9 (12   678)  # 201   É  latin capital letter e with acute

char \XCD (1  4 678)  # 205   Í  latin capital letter i with acute

char \XD3 (1  45678)  # 211   Ó  latin capital letter o with acute

char \XDA (1   5678)  # 218   Ú  latin capital letter u with acute

char \XDD (12 4 678)  # 221   Ý  latin capital letter y with acute

char \XE1 (1    6 8)  # 225   á  latin small letter a with acute

char \XE9 (12   6 8)  # 233   é  latin small letter e with acute

char \XED (1  4 6 8)  # 237   í  latin small letter i with acute

char \XF3 (1  456 8)  # 243   ó  latin small letter o with acute

char \XFA (1   56 8)  # 250   ú  latin small letter u with acute

char \XFD (12 4 6 8)  # 253   ý  latin small letter y with acute

# The 6 letters with a dieresis accent (") use the [f-j] dot combinations with

# dots 3 and 6 added, and the number sign (because it fits the sequence

# reasonably well):

     #Hex    Dots       Dec Char Description

char \XC4 (1234 678)  # 196   Ä  latin capital letter a with diaeresis

char \XCB (12345678)  # 203   Ë  latin capital letter e with diaeresis

char \XCF (123 5678)  # 207   Ï  latin capital letter i with diaeresis

char \XD6 ( 234 678)  # 214   Ö  latin capital letter o with diaeresis

char \XDC ( 2345678)  # 220   Ü  latin capital letter u with diaeresis

char \XE4 (1234 6 8)  # 228   ä  latin small letter a with diaeresis

char \XEB (123456 8)  # 235   ë  latin small letter e with diaeresis

char \XEF (123 56 8)  # 239   ï  latin small letter i with diaeresis

char \XF6 ( 234 6 8)  # 246   ö  latin small letter o with diaeresis

char \XFC ( 23456 8)  # 252   ü  latin small letter u with diaeresis

char \XFF (  3456 8)  # 255   ÿ  latin small letter y with diaeresis

# There is no uppercase y-dieresis in the Latin1 character set. The German

# lowercase double-s, which also doesn't have an uppercase counterpart in the

# Latin1 character set, uses its representation:

     #Hex    Dots       Dec Char Description

char \XDF (  345678)  # 223   ß  latin small letter sharp s

# The remaining accented letters are:

     #Hex    Dots       Dec Char Description

char \XC3 (    5 78)  # 195   Ã  latin capital letter a with tilde

char \XD1 (   4 678)  # 209   Ñ  latin capital letter n with tilde

char \XD5 (    5678)  # 213   Õ  latin capital letter o with tilde

char \XC5 (  345 78)  # 197   Å  latin capital letter a with ring above

char \XC7 (  34 678)  # 199   Ç  latin capital letter c with cedilla

char \XD8 (  34  78)  # 216   Ø  latin capital letter o with stroke

char \XC6 (  3   78)  # 198   Æ  latin capital letter ae

char \XD0 (     678)  # 208   Ð  latin capital letter eth

char \XDE (  3  678)  # 222   Þ  latin capital letter thorn

char \XE3 (    5  8)  # 227   ã  latin small letter a with tilde

char \XF1 (   4 6 8)  # 241   ñ  latin small letter n with tilde

char \XF5 (    56 8)  # 245   õ  latin small letter o with tilde

char \XE5 (  345  8)  # 229   å  latin small letter a with ring above

char \XE7 (  34 6 8)  # 231   ç  latin small letter c with cedilla

char \XF8 (  34   8)  # 248   ø  latin small letter o with stroke

char \XE6 (  3    8)  # 230   æ  latin small letter ae

char \XF0 (     6 8)  # 240   ð  latin small letter eth

char \XFE (  3  6 8)  # 254   þ  latin small letter thorn

# Some characters are the same as other characters which they resemble but with

# dot 7 added:

     #Hex    Dots       Dec Char Description

char \XAD (  3  67 )  # 173   ­  soft hyphen

char \XAB (12   67 )  # 171   «  left-pointing double angle quotation mark

char \XBB (  345 7 )  # 187   »  right-pointing double angle quotation mark

char \XA6 (1   567 )  # 166   ¦  broken bar

char \XB9 ( 2    7 )  # 185   ¹  superscript one

char \XB2 ( 23   7 )  # 178   ²  superscript two

char \XB3 ( 2  5 7 )  # 179   ³  superscript three

char \XB1 (  34 67 )  # 177   ±  plus-minus sign

char \XD7 (1    67 )  # 215   ×  multiplication sign

char \XF7 (  34  7 )  # 247   ÷  division sign

char \XB7 (   4 67 )  # 183   ·  middle dot

char \XA1 ( 234 67 )  # 161   ¡  inverted exclamation mark

char \XBF (1  4567 )  # 191   ¿  inverted question mark

char \XA2 (12 4 67 )  # 162   ¢  cent sign

char \XA3 (  34567 )  # 163   £  pound sign

# A few more characters follow this same convention but their relationships

# to their base characters is a bit obscure:

     #Hex    Dots       Dec Char Description

char \XA4 (1  4 67 )  # 164   ¤  currency sign

char \XA5 (1234 67 )  # 165   ¥  yen sign

# Some characters are represented by the first letters of their names lowered

# by one row of dots:

     #Hex    Dots       Dec Char Description

char \XAC ( 2  567 )  # 172   ¬  not sign

char \XB6 ( 23 5 7 )  # 182   ¶  pilcrow sign

char \XA9 ( 23 567 )  # 169   ©  copyright sign

char \XAE ( 23  67 )  # 174   ®  registered sign

char \XA7 (  3 5 7 )  # 167   §  section sign

char \XB0 (  3 567 )  # 176   °  degree sign

# The three fraction characters use combinations of dots 1 and 4 (which

# progress from left to right as the value of the fraction increases) together

# with dots 2,3,5,6,7:

     #Hex    Dots       Dec Char Description

char \XBC (123 567 )  # 188   ¼  vulgar fraction one quarter

char \XBD (1234567 )  # 189   ½  vulgar fraction one half

char \XBE ( 234567 )  # 190   ¾  vulgar fraction three quarters

# Each of the three extended accent characters is the same as its conventional

# compose character but with dot 7 added:

     #Hex    Dots       Dec Char Description

char \XB4 (  3   7 )  # 180   ´  acute accent

char \XB8 (     67 )  # 184   ¸  cedilla

char \XA8 (    5 7 )  # 168   ¨  diaeresis

# The two gender symbols are:

     #Hex    Dots       Dec Char Description

char \XBA (      7 )  # 186   º  masculine ordinal indicator

char \XAA (       8)  # 170   ª  feminine ordinal indicator

# The three remaining characters are:

     #Hex    Dots       Dec Char Description

char \XAF ( 2   67 )  # 175   ¯  macron

char \XB5 (    567 )  # 181   µ  micro sign

# The nonbreaking space is dots 7 and 8 because this presents a sequence of

# nonbreaking spaces as a smooth low line segment.

     #Hex    Dots       Dec Char Description

char \X7F (   4567 )  # 127  ^?  delete

include ltr-alias.tti

include num-alias.tti

include common.tti