/etc/brltty/Text/brf.ttb is in brltty 5.4-7+deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | ###############################################################################
# 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) 1995-2016 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 - Braille Ready Format (for viewing .brf files within an editor or pager)
char \s ( )
glyph A (1 )
glyph B (12 )
glyph C (1 4 )
glyph D (1 45 )
glyph E (1 5 )
glyph F (12 4 )
glyph G (12 45 )
glyph H (12 5 )
glyph I ( 2 4 )
glyph J ( 2 45 )
glyph K (1 3 )
glyph L (123 )
glyph M (1 34 )
glyph N (1 345 )
glyph O (1 3 5 )
glyph P (1234 )
glyph Q (12345 )
glyph R (123 5 )
glyph S ( 234 )
glyph T ( 2345 )
glyph U (1 3 6)
glyph V (123 6)
glyph X (1 34 6)
glyph Y (1 3456)
glyph Z (1 3 56)
char & (1234 6)
char = (123456)
char ( (123 56)
char ! ( 234 6)
char ) ( 23456)
char * (1 6)
char < (12 6)
char % (1 4 6)
char ? (1 456)
char : (1 56)
char $ (12 4 6)
glyph ] (12 456)
glyph \\ (12 56)
glyph [ ( 2 4 6)
glyph W ( 2 456)
char 1 ( 2 )
char 2 ( 23 )
char 3 ( 2 5 )
char 4 ( 2 56)
char 5 ( 2 6)
char 6 ( 23 5 )
char 7 ( 23 56)
char 8 ( 23 6)
char 9 ( 3 5 )
char 0 ( 3 56)
char / ( 34 )
char + ( 34 6)
char \# ( 3456)
char > ( 345 )
char ' ( 3 )
char - ( 3 6)
glyph @ ( 4 )
glyph ^ ( 45 )
char _ ( 456)
char " ( 5 )
char . ( 4 6)
char ; ( 56)
char , ( 6)
# For convenience, lowercase alphabetic characters are also defined
# so as to have readable text when not viewing a .brf file
# (like BRLTTY's config menu for switching to another braille table).
char a (1 )
char b (12 )
char c (1 4 )
char d (1 45 )
char e (1 5 )
char f (12 4 )
char g (12 45 )
char h (12 5 )
char i ( 2 4 )
char j ( 2 45 )
char k (1 3 )
char l (123 )
char m (1 34 )
char n (1 345 )
char o (1 3 5 )
char p (1234 )
char q (12345 )
char r (123 5 )
char s ( 234 )
char t ( 2345 )
char u (1 3 6)
char v (123 6)
char w ( 2 456)
char x (1 34 6)
char y (1 3456)
char z (1 3 56)
# The following additional characters need to be defined
# because some .brf files contain non-standard characters
# and because some braille translators output non-standard characters.
char { ( 2 4 6)
char } (12 456)
char | (12 56)
char ~ ( 45 )
char ` ( 4 )
glyph \X7F ( 456)
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