2.9BSD/usr/man/man5/troff.5

.TH TROFF 5
.SH NAME
troff output \- format of output from troff(1)
.SH DESCRIPTION
The output is in the following octal numbers:
.nf
000-077	normal characters
    100 initialize
    101 lower rail
    102 upper rail
    103 upper mag
    104 lower mag
    105 lower case
    106 upper case
    107 escape forward
    110 escape backward
    111 stop
    112 lead forward
    113 undefined
    114 lead backward
    115 undefined
    116 undefined
    117 undefined
120-137 size change
140-177 lead (140: lead 31;   177: lead 0)
200-377 escape (200: esc 127;   377: esc 0)
.fi
.sp 2
The following table shows the correspondence from octal \fItroff\fP
code to ASCII characters as stored in \fItroff\fP fonts.
The actual octal code obtained is only 6 bits long if it is
a character and the case bit (0100) is added in software
depending on the current case as defined above.
.sp
.nf
   1	'h',	/*h*/
   2	't',	/*t*/
   3	'n',	/*n*/
   4	'm',	/*m*/
   5	'l',	/*l*/
   6	'i',	/*i*/
   7	'z',	/*z*/
  10	's',	/*s*/
  11	'd',	/*d*/
  12	'b',	/*b*/
  13	'x',	/*x*/
  14	'f',	/*f*/
  15	'j',	/*j*/
  16	'u',	/*u*/
  17	'k',	/*k*/
  20	'\0',	/*blank*/
  21	'p',	/*p*/
  22	'-',	/*_ 3/4 em dash*/
  23	';',	/*;*/
  24	'\0',	/*blank*/
  25	'a',	/*a*/
  26	'\05',	/*rule*/
  27	'c',	/*c*/
  30	'`',	/*` open*/
  31	'e',	/*e*/
  32	'\'',	/*' close*/
  33	'o',	/*o*/
  34	'\0',	/*1/4*/
  35	'r',	/*r*/
  36	'\0',	/*1/2*/
  37	'v',	/*v*/
  40	'-',	/*- hyphen*/
  41	'w',	/*w*/
  42	'q',	/*q*/
  43	'/',	/*/*/
  44	'.',	/*.*/
  45	'g',	/*g*/
  46	'\0',	/*3/4*/
  47	',',	/*,*/
  50	'&',	/*&*/
  51	'y',	/*y*/
  52	'\0',	/*blank*/
  53	'%',	/*%*/
  54	'\0',	/*blank*/
  55	'Q',	/*Q*/
  56	'T',	/*T*/
  57	'O',	/*O*/
  60	'H',	/*H*/
  61	'N',	/*N*/
  62	'M',	/*M*/
  63	'L',	/*L*/
  64	'R',	/*R*/
  65	'G',	/*G*/
  66	'I',	/*I*/
  67	'P',	/*P*/
  70	'C',	/*C*/
  71	'V',	/*V*/
  72	'E',	/*E*/
  73	'Z',	/*Z*/
  74	'D',	/*D*/
  75	'B',	/*B*/
  76	'S',	/*S*/
  77	'Y',	/*Y*/
 100	'\0',	/*blank*/
 101	'F',	/*F*/
 102	'X',	/*X*/
 103	'A',	/*A*/
 104	'W',	/*W*/
 105	'J',	/*J*/
 106	'U',	/*U*/
 107	'K',	/*K*/
 110	'0',	/*0*/
 111	'1',	/*1*/
 112	'2',	/*2*/
 113	'3',	/*3*/
 114	'4',	/*4*/
 115	'5',	/*5*/
 116	'6',	/*6*/
 117	'7',	/*7*/
 120	'8',	/*8*/
 121	'9',	/*9*/
 122	'*',	/***/
 123	'\04',	/*minus*/
 124	'\01',	/*fi*/
 125	'\02',	/*fl*/
 126	'\03',	/*ff*/
 127	-1,	/* cent sign */
 130	'\0',	/*ffl*/
 131	'\0',	/*ffi*/
 132	'(',	/*(*/
 133	')',	/*)*/
 134	'[',	/*[*/
 135	']',	/*]*/
 136	-1,	/* degree */
 137	-1,	/* dagger */
 140	'=',	/*=*/
 141	-1,	/* registered */
 142	':',	/*:*/
 143	'+',	/*+*/
 144	'\0',	/*blank*/
 145	'!',	/*!*/
 146	-1,	/* bullet */
 147	'?',	/*?*/
 150	'\'',	/*foot mark*/
 151	'|',	/*|*/
 152	'\0',	/*blank*/
 153	-1,	/* copyright */
 154	-1,	/* square */
 155	'$',	/*$*/
 156	'\0',
 157	'\0',
 160	'"',	/*"*/
 161	'#',	/*#*/
 162	'<',	/*<*/
 163	'>',	/*>*/
 164	'@',	/*@*/
 165	'\\',	/*\\*/
 166	'^',	/*^*/
 167	'{',	/*{*/
 170	'}',	/*}*/
 171	'~'	/*~*/
.SH SEE ALSO
troff(1), pti(6)
.SH BUGS
Manifold
.SH AUTHOR
Dave Sherman at University of Toronto.