a2p
accept
access
acct
addftinfo
addr2line
adjtime
afmtodit
after
aio_cancel
aio_error
aio_read
aio_return
aio_suspend
aio_waitcomplete
aio_write
alias
aliases
alloc
anvil
append
apply
apropos
ar
array
as
asa
asn1parse
at
atq
atrm
attemptckalloc
attemptckrealloc
authlib
authtest
autopoint
awk
b64decode
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basename
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bc
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co
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comm
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compile_et
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continue
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creat
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ctm
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cu
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cut
cvs
date
dbiprof
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dc
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dd
dde
default
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des
destroy
devfs
df
dgettext
dgst
dh
dhparam
dialog
diff
diff3
dig
dir
dirent
dirname
dirs
discard
disktab
dngettext
do
domainname
done
dprofpp
dsa
dsaparam
dtmfdecode
du
dup
dup2
eaccess
ec
ecdsa
echo
echotc
ecparam
ed
edit
editrc
ee
egrep
elf
elfdump
elif
else
enc
enc2xs
encoding
end
endif
endsw
engine
enigma
entry
env
envsubst
eof
eqn
err
errno
error
errstr
esac
ethers
euc
eui64
eval
event
evp
ex
exec
execve
exit
expand
export
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expr
extattr
extattr_delete_fd
extattr_delete_file
extattr_get_fd
extattr_get_file
extattr_set_fd
extattr_set_file
f77
false
famm
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fblocked
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fc
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fhstat
fhstatfs
fi
file
file2c
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flock
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fs
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g711conv
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gencat
gendsa
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gensnmptree
getconf
getdents
getdirentries
getdtablesize
getegid
geteuid
getfacl
getfh
getfsstat
getgid
getgroups
getitimer
getlogin
getopt
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getpeername
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gets
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gettytab
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glob
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gmake
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gprof
grab
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grid
grn
grodvi
groff
groff_font
groff_out
groff_tmac
grog
grolbp
grolj4
grops
grotty
group
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gunzip
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gzexe
gzip
h2ph
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hash
hashstat
hd
head
help2man
hesinfo
hexdump
history
host
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hpftodit
http
hup
i386_get_ioperm
i386_get_ldt
i386_set_ioperm
i386_set_ldt
i386_vm86
iconv
id
ident
idprio
if
ifnames253
ifnames259
image
imapd
incr
indent
indxbib
info
infokey
inode
install
instmodsh
interp
intro
introduction
ioctl
ipcrm
ipcs
ipf
ipftest
ipnat
ippool
ipresend
issetugid
jail
jail_attach
jobid
jobs
join
jot
kbdcontrol
kbdmap
kcon
kdestroy
kdump
kenv
kevent
keycap
keylogin
keylogout
keymap
keysyms
kgdb
kill
killall
killpg
kinit
kldfind
kldfirstmod
kldload
kldnext
kldstat
kldsym
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klist
kpasswd
kqueue
kse
kse_create
kse_exit
kse_release
kse_switchin
kse_thr_interrupt
kse_wakeup
ktrace
label
labelframe
lam
lappend
last
lastcomm
lastlog
lchflags
lchmod
lchown
ld
ldap
ldapadd
ldapcompare
ldapdelete
ldapmodify
ldapmodrdn
ldappasswd
ldapsearch
ldapwhoami
ldd
leave
less
lesskey
lex
lgetfh
lhash
libnetcfg
library
limit
limits
lindex
link
linprocfs
linsert
lint
lio_listio
list
listbox
listen
lj4_font
lkbib
llength
lmtp
ln
load
loadfont
local
locale
locate
lock
lockf
log
logger
login
logins
logname
logout
look
lookbib
lorder
lower
lp
lpq
lpr
lprm
lptest
lrange
lreplace
ls
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lseek
lset
lsort
lstat
lsvfs
lutimes
lynx
m4
madvise
magic
mail
maildiracl
maildirkw
maildirmake
mailq
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makeinfo
makewhatis
man
manpath
master
mc
mcedit
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md2
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modfind
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moduli
more
motd
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mprotect
mptable
msdos
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msgcat
msgcmp
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msgen
msgexec
msgfilter
msgfmt
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msginit
msgmerge
msgs
msgunfmt
msguniq
mskanji
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mt
munlock
munlockall
munmap
mv
myisamchk
myisamlog
myisampack
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mysql_zap
namespace
nanosleep
nawk
nc
ncal
ncplist
ncplogin
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neqn
netconfig
netgroup
netid
netstat
networks
newaliases
newgrp
nex
nfsstat
nfssvc
ngettext
nice
nl
nm
nmount
nohup
nologin
notify
nroff
nseq
nslookup
ntp_adjtime
ntp_gettime
nvi
nview
objcopy
objdump
objformat
ocsp
od
onintr
open
openssl
opieaccess
opieinfo
opiekey
opiekeys
opiepasswd
option
options
oqmgr
pack
package
packagens
pagesize
palette
pam_auth
panedwindow
parray
passwd
paste
patch
pathchk
pathconf
pawd
pax
pbm
pcre
pcreapi
pcrebuild
pcrecallout
pcrecompat
pcrecpp
pcregrep
pcrematching
pcrepartial
pcrepattern
pcreperform
pcreposix
pcreprecompile
pcresample
pcretest
perl
perl56delta
perl58delta
perl561delta
perl570delta
perl571delta
perl572delta
perl573delta
perl581delta
perl582delta
perl583delta
perl584delta
perl585delta
perl586delta
perl587delta
perl588delta
perl5004delta
perl5005delta
perlaix
perlamiga
perlapi
perlapio
perlapollo
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perlbeos
perlbook
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perlbot
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perlcall
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perlclib
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perldata
perldbmfilter
perldebguts
perldebtut
perldebug
perldelta
perldgux
perldiag
perldoc
perldos
perldsc
perlebcdic
perlembed
perlepoc
perlfaq
perlfaq1
perlfaq2
perlfaq3
perlfaq4
perlfaq5
perlfaq6
perlfaq7
perlfaq8
perlfaq9
perlfilter
perlfork
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perlfreebsd
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perlgpl
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perlmint
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perlreftut
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perlretut
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perror
pfbtops
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pgrep
phones
photo
pic
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piconv
pid
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pkcs7
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pkg_add
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pkill
pl2pm
place
pod2html
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podchecker
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refer
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return
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rlog
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rs
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set
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touch
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tr
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true
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tty
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ul
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wc
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whereis
which
while
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yppasswd
ypwhich
yyfix
zcat
zcmp
zdiff
zegrep
zfgrep
zforce
zgrep
zmore
znew
_exit
__syscall
 
FreeBSD/Linux/UNIX General Commands Manual
Hypertext Man Pages
groff_font
 
GROFF_FONT(5)							 GROFF_FONT(5)



NAME
       groff_font - format of groff device and font description files

DESCRIPTION
       The groff font format is roughly a superset of the ditroff font format.
       The font files for device name  are  stored  in	a  directory  devname.
       There  are two types of file: a device description file called DESC and
       for each font F a font file called F.  These are text files; unlike the
       ditroff font format, there is no associated binary format.

   DESC file format
       The  DESC  file can contain the following types of line as shown below.
       Later entries in the file override previous values.

       charset
	      This line and everything following in the file are ignored.   It
	      is allowed for the sake of backwards compatibility.

       family fam
	      The default font family is fam.

       fonts n F1 F2 F3...Fn
	      Fonts  F1...Fn will be mounted in the font positions m+1,...,m+n
	      where m is the number of styles.	This command may  extend  over
	      more  than  one line.  A font name of 0 will cause no font to be
	      mounted on the corresponding font position.

       hor n  The horizontal resolution is n machine units.

       image_generator string
	      Needed for grohtml only.	It specifies the program  to  generate
	      PNG  images from PostScript input.  Under GNU/Linux this is usu-
	      ally gs but under other systems (notably cygwin) it might be set
	      to another name.

       paperlength n
	      The  physical vertical dimension of the output medium in machine
	      units.  This isn't used by troff itself but by  output  devices.
	      Deprecated.  Use papersize instead.

       papersize string
	      Select  a paper size.  Valid values for string are the ISO paper
	      types A0-A7, B0-B7, C0-C7, D0-D7, DL, and  the  US  paper  types
	      letter, legal, tabloid, ledger, statement, executive, com10, and
	      monarch.	Case is not significant for string if it holds	prede-
	      fined  paper  types.   Alternatively,  string can be a file name
	      (e.g. `/etc/papersize'); if the file can be opened, groff  reads
	      the  first  line	and tests for the above paper sizes.  Finally,
	      string can be a custom paper size in the format length,width (no
	      spaces  before and after the comma).  Both length and width must
	      have a unit appended; valid values are `i' for inches,  `c'  for
	      centimeters,  `p'  for  points,  and  `P'  for  picas.  Example:
	      12c,235p.  An argument which  starts  with  a  digit  is	always
	      treated  as a custom paper format.  papersize sets both the ver-
	      tical and horizontal dimension of the output medium.

	      More than one argument can be specified; groff scans  from  left
	      to right and uses the first valid paper specification.

       paperwidth n
	      The  physical  horizontal  dimension  of	the  output  medium in
	      machine units.  Deprecated.  Use papersize instead.  This  isn't
	      used by troff itself but by output devices.

       pass_filenames
	      Make troff tell the driver the source file name being processed.
	      This is achieved by another tcommand: F filename.

       postpro program
	      Use program as the postprocessor.

       prepro program
	      Call program as a preprocessor.

       print program
	      Use program as the spooler program for  printing.   If  omitted,
	      the -l and -L options of groff are ignored.

       res n  There are n machine units per inch.

       sizes s1 s2...sn 0
	      This  means  that  the  device  has fonts at s1, s2,...sn scaled
	      points.  The list of sizes must be terminated by a 0.   Each  si
	      can also be a range of sizes m-n.  The list can extend over more
	      than one line.

       sizescale n
	      The scale factor for pointsizes.	By default this has a value of
	      1.   One scaled point is equal to one point/n.  The arguments to
	      the unitwidth and sizes commands are given in scaled points.

       styles S1 S2...Sm
	      The first m  font  positions  will  be  associated  with	styles
	      S1...Sm.

       tcommand
	      This  means that the postprocessor can handle the t and u output
	      commands.

       unitwidth n
	      Quantities in the font files are	given  in  machine  units  for
	      fonts whose point size is n scaled points.

       unscaled_charwidths
	      Make  the  font handling module always return unscaled character
	      widths.  Needed for the grohtml device.

       use_charnames_in_special
	      This command indicates that troff should encode named characters
	      inside special commands.

       vert n The vertical resolution is n machine units.

       The  res,  unitwidth,  fonts,  and sizes lines are compulsory.  Not all
       commands in the DESC file are used by troff itself; some  of  the  key-
       words  (or  even  additional  ones) are used by postprocessors to store
       arbitrary information about the device.

       Here a list of obsolete keywords which are recognized by groff but com-
       pletely ignored: spare1, spare2, biggestfont.

   Font file format
       A font file has two sections.  The first section is a sequence of lines
       each containing a sequence of blank delimited words; the first word  in
       the line is a key, and subsequent words give a value for that key.

       ligatures lig1 lig2...lign [0]
	      Characters  lig1,  lig2, ..., lign are ligatures; possible liga-
	      tures are ff, fi, fl, ffi and ffl.  For backwards compatibility,
	      the  list  of ligatures may be terminated with a 0.  The list of
	      ligatures may not extend over more than one line.

       name F The name of the font is F.

       slant n
	      The characters of the font have a slant of n degrees.  (Positive
	      means forward.)

       spacewidth n
	      The normal width of a space is n.

       special
	      The  font  is  special;  this  means  that  when	a character is
	      requested that is not present in the current font,  it  will  be
	      searched for in any special fonts that are mounted.

       Other  commands	are ignored by troff but may be used by postprocessors
       to store arbitrary information about the font in the font file.

       The first section can contain comments which start with the # character
       and extend to the end of a line.

       The  second section contains one or two subsections.  It must contain a
       charset subsection and it may  also  contain  a	kernpairs  subsection.
       These subsections can appear in any order.  Each subsection starts with
       a word on a line by itself.

       The word charset starts the charset subsection.	The  charset  line  is
       followed  by  a sequence of lines.  Each line gives information for one
       character.  A line comprises a number of fields separated by blanks  or
       tabs.  The format is

	      name metrics type code [entity_name] [-- comment]

       name  identifies the character: if name is a single character c then it
       corresponds to the groff input character c; if it is  of  the  form  \c
       where c is a single character, then it corresponds to the special char-
       acter \[c]; otherwise it  corresponds  to  the  groff  input  character
       \[name].  If it is exactly two characters xx it can be entered as \(xx.
       Note that single-letter special characters can't be accessed as \c; the
       only  exception	is `\-' which is identical to `\[-]'.  The name --- is
       special and indicates that the character is  unnamed;  such  characters
       can only be used by means of the \N escape sequence in troff.

       Groff supports eight-bit characters; however some utilities have diffi-
       culties with eight-bit characters.  For this reason, there is a conven-
       tion  that  the	name charn is equivalent to the single character whose
       code is n.  For example, char163 would be equivalent to	the  character
       with code 163 which is the pounds sterling sign in ISO Latin-1.

       The type field gives the character type:

       1      means the character has a descender, for example, p;

       2      means the character has an ascender, for example, b;

       3      means  the  character  has both an ascender and a descender, for
	      example, (.

       The code field gives the code which the postprocessor uses to print the
       character.  The character can also be input to groff using this code by
       means of the \N escape sequence.  The code can be any integer.	If  it
       starts  with  a 0 it will be interpreted as octal; if it starts with 0x
       or 0X it will be intepreted as hexadecimal.  Note, however, that the \N
       escape sequence only accepts a decimal integer.

       The entity_name field gives an ascii string identifying the glyph which
       the postprocessor uses to print the character.  This field is  optional
       and  has  been introduced so that the html device driver can encode its
       character set.  For example, the character `\[Po]'  is  represented  as
       `£' in html 4.0.

       Anything  on the line after the encoding field resp. after `--' will be
       ignored.

       The metrics field has the form (in one line; it is broken here for  the
       sake of readability):

	      width[,height[,depth[,italic-correction
	      [,left-italic-correction[,subscript-correction]]]]]

       There  must  not  be  any spaces between these subfields.  Missing sub-
       fields are assumed to be 0.  The subfields are  all  decimal  integers.
       Since  there  is  no  associated  binary  format,  these values are not
       required to fit into a variable of type char as they  are  in  ditroff.
       The  width subfields gives the width of the character.  The height sub-
       field gives the height of the character (upwards  is  positive);  if  a
       character does not extend above the baseline, it should be given a zero
       height, rather than a negative height.  The depth  subfield  gives  the
       depth  of  the  character, that is, the distance below the lowest point
       below the baseline to which the character extends (downwards  is  posi-
       tive);  if  a  character  does  not extend below above the baseline, it
       should be given a zero  depth,  rather  than  a	negative  depth.   The
       italic-correction  subfield  gives  the	amount of space that should be
       added after the character when it is immediately to be  followed  by  a
       character from a roman font.  The left-italic-correction subfield gives
       the amount of space that should be added before the character  when  it
       is  immediately	to  be preceded by a character from a roman font.  The
       subscript-correction gives the amount of space  that  should  be  added
       after  a character before adding a subscript.  This should be less than
       the italic correction.

       A line in the charset section can also have the format

	      name "

       This indicates that name is just another name for  the  character  men-
       tioned in the preceding line.

       The  word  kernpairs  starts  the  kernpairs  section.  This contains a
       sequence of lines of the form:

	      c1 c2 n

       This means that when character c1 appears  next	to  character  c2  the
       space between them should be increased by n.  Most entries in kernpairs
       section will have a negative value for n.

FILES
       /usr/share/groff_font/devname/DESC
	      Device description file for device name.

       /usr/share/groff_font/devname/F
	      Font file for font F of device name.

SEE ALSO
       groff_out(5), troff(1).



Groff Version 1.19.2	       15 November 2005 		 GROFF_FONT(5)
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