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MF !!!MF NAME SYNOPSIS DESCRIPTION ONLINE GRAPHICS OUTPUT OPTIONS ENVIRONMENT FONT UTILITIES FILES SUGGESTED READING COMMENTS SEE ALSO BUGS AUTHORS ---- !!NAME mf, mfw, inimf, virmf - Metafont, a language for font and logo design !!SYNOPSIS __mf__ [[''options''] [[''commands''] !!DESCRIPTION This manual page is not meant to be exhaustive. The complete documentation for this version of TEX can be found in the info file or manual ''Web2C: A TeX implementation''. M ETAFONT reads the program in the specified files and outputs font rasters (in ''gf'' format) and font metrics (in ''tfm'' format). The M ETAFONT language is described in ''The M ETAFONT book''. Like TEX, M ETAFONT is normally used with a large body of precompiled macros, and font generation in particular requires the support of several macro files. This version of M ETAFONT looks at its command line to see what name it was called under. Both __inimf__ and __virmf__ are symlinks to the __mf__ executable. When called as __inimf__ (or when the __--ini__ option is given) it can be used to precompile macros into a ''.base'' file. When called as __virmf__ it will use the ''plain'' base. When called under any other name, M ETAFONT will use that name as the name of the base to use. For example, when called as __mf__ the ''mf'' base is used, which is identical to the ''plain'' base. Other bases than ''plain'' are rarely used. The ''commands'' given on the command line to the M ETAFONT program are passed to it as the first input line. (But it is often easier to type extended arguments as the first input line, since UNIX shells tend to gobble up or misinterpret M ETAFONT 's favorite symbols, like semicolons, unless you quote them.) As described in ''The M ETAFONT book'', that first line should begin with a filename, a \''controlsequence'', or a ''''. The normal usage is to say __mf__ 'mode= __n'');]' input ''font'' to start processing ''font.mf''. The single quotes are the best way of keeping the Unix shell from misinterpreting the semicolons and from removing the \ character, which is needed here to keep M ETAFONT from thinking that you want to produce a font called ''mode''. (Or you can just say ''mf'' and give the other stuff on the next line, without quotes.) Other control sequences, such as ''batchmode'' (for silent operation) can also appear. The name ''font'' will be the ``jobname'', and is used in forming output file names. If M ETAFONT doesn't get a file name in the first line, the jobname is ''mfput''. The default extension, ''.mf'', can be overridden by specifying an extension explicitly. A log of error messages goes into the file ''jobname''__.__''log''. The output files are ''jobname''__.__''tfm'' and ''jobname''__.__''''number'''', where ''mode'' in this example is shown generically as ''localfont'' (see below) must be substituted. If the mode is not specified or is not valid for your site, M ETAFONT will default to ''proof'' mode which produces large character images for use in font design and refinement. Proof mode can be recognized by the suffix ''.2602gf'' after the jobname. Examples of proof mode output can be found in ''Computer Modern Typefaces'' (Volume E of ''Computers and Typesetting''). The system of ''magsteps'' is identical to the system used by TEX, with values generally in the range 0.5, 1.0, 2.0, 3.0, 4.0 and 5.0. A listing of ''gf'' numbers for 118-dpi, 240-dpi and 300-dpi fonts is shown below. MAGSTEP 118 dpi 240 dpi 300 dpi mag=magstep(0) 118 240 300 mag=magstep(0.5) 129 263 329 mag=magstep(1) 142 288 360 mag=magstep(2) 170 346 432 mag=magstep(3) 204 415 518 mag=magstep(4) 245 498 622 mag=magstep(5) 294 597 746 Magnification can also be specified not as a magstep but as an arbitrary value, such as 1.315, to create special character sizes. Before font production can begin, it is necessary to set up the appropriate base files. The minimum set of components for font production for a given print-engine is the ''plain.mf'' macro file and the local ''mode_def'' file. The macros in ''plain.mf'' can be studied in an appendix to the ''M ETAFONT book''; they were developed by Donald E. Knuth, and this file should never be altered except when it is officially upgraded. Each ''mode_def'' specification helps adapt fonts to a particular print-engine. There is a regular discussion of ''mode_def''s in ''TUGboat'', the journal of the TEX Users Group. The local ones in use on this computer should be in ''modes.mf''. The ''e'' response to M ETAFONT 's error-recovery mode invokes the system default editor at the erroneous line of the source file. There is an environment variable, MFEDIT, that overrides the default editor. It should contain a string with vi__ editor can be set with the __csh__ command ''setenv MFEDIT '' A convenient file in the library is ''null.mf'', containing nothing. When __mf__ can't find the file it thinks you want to input, it keeps asking you for another file name; responding `null' gets you out of the loop if you don't want to input anything. !!ONLINE GRAPHICS OUTPUT M ETAFONT can use most modern displays, so you can see its output without printing. Chapter 23 of ''The M ETAFONT book'' describes what you can do. This implementation of M ETAFONT uses environment variables to determine which display device you want to use. First it looks for a variable MFTERM, and then for TERM. If it can't find either, you get no online output. Otherwise, the value of the variable determines the device to use: __hp2627__, __sun__ (for old !SunView), __tek__, __uniterm__ (for an Atari ST Tek 4014 emulator), __xterm__ (for either X10 or X11). Some of these devices may not be supported in all M ETAFONT executables; the choice is made at compilation time. On some systems, there are two M ETAFONT binaries, __mf__ and __mfw__. On those systems the __mfw__ binary supports graphics, while the __mf__ binary does not. !!OPTIONS This version of M ETAFONT understands the following command line options. __--base__ ''base'' Use ''base'' as the name of the base to be used, instead of the name by which M ETAFONT was called or a ''%'' line. __--file-line-error-style__ Print error messages in the form ''file:line:error'' which is similar to the way many compilers format them. __--help__ Print help message and exit. __--ini__ Be __inimf__, for dumping bases; this is implicitly true if the program is called as __inimf__. __--interaction__ ''mode'' Sets the interaction mode. The mode can be one of ''batchmode'', ''nonstopmode'', ''scrollmode'', and ''errorstopmode''. The meaning of these modes is the same as that of the corresponding commands. __--kpathsea-debug__ ''bitmask'' Sets path searching debugging flags according to the bitmask. See the ''Kpathsea'' manual for details. __--maketex__ ''fmt'' Enable mktex''fmt'', where ''fmt'' must be ''mf''. __--no-maketex__ ''fmt'' Disable mktex''fmt'', where ''fmt'' must be ''mf''. __--progname__ ''name'' Pretend to be program ''name''. This affects both the format used and the search paths. __--recorder__ Enable the filename recorder. This leaves a trace of the files opened for input and output in a file with extension ''.fls''. __--translate-file__ ''tcxname'' Use the ''tcxname'' translation table. __--version__ Print version information and exit. !!ENVIRONMENT See the Kpathsearch library documentation (the `Path specifications' node) for the details of how the environment variables are use when searching. The __kpsewhich__ utility can be used to query the values of the variables. If the environment variable TEXMFOUTPUT is set, M ETAFONT attempts to put its output files in it, if they cannot be put in the current directory. Again, see tex(1). MFINPUTS Search path for ''input'' and ''openin'' files. MFEDIT Command template for switching to editor. MFTERM Determines the online graphics display. If MFTERM is not set, and DISPLAY is set, the Metafont window support for X is used. (DISPLAY must be set to a valid X server specification, as usual.) If neither MFTERM nor DISPLAY is set, TERM is used to guess the window support to use. !!FONT UTILITIES A number of utility programs are available. The following is a partial list of available utilities and their purpose. Consult your local M ETAFONT guru for details. __gftopk__ Takes a ''gf'' file and produces a more tightly packed ''pk'' font file. __gftodvi__ Produces proof sheets for fonts. __gftype__ Displays the contents of a ''gf'' file in mnemonics and/or images. __pktype__ Mnemonically displays the contents of a ''pk'' file. __mft__ Formats a source file as shown in ''Computer Modern Typefaces''. !!FILES ''mf.pool'' Encoded text of M ETAFONT 's messages. ''*.base'' Predigested M ETAFONT base files. ''$TEXMFMAIN/metafont/base/plain.mf'' The standard base. ''$TEXMFMAIN/metafont/misc/modes.mf'' The file of ''mode_def''s for your site's various printers !!SUGGESTED READING Donald E. Knuth, ''The M ETAFONT book'' (Volume C of ''Computers and Typesetting''), Addison-Wesley, 1986, ISBN 0-201-13445-4. Donald E. Knuth, ''M ETAFONT : The Program'' (Volume D of ''Computers and Typesetting''), Addison-Wesley, 1986, ISBN 0-201-13438-1. Donald E. Knuth, ''Computer Modern Typefaces'' (Volume E of ''Computers and Typesetting''), Addison-Wesley, 1986, ISBN 0-201-13446-2.'' TUGboat'' (the journal of the TEX Users Group). !!COMMENTS Warning: ``Type design can be hazardous to your other interests. Once you get hooked, you will develop intense feelings about letterforms; the medium will intrude on the messages that you read. And you will perpetually be thinking of improvements to the fonts that you see everywhere, especially those of your own design.'' !!SEE ALSO gftopk(1), gftodvi(1), gftype(1), mft(1), pltotf(1), tftopl(1). !!BUGS On January 4, 1986 the ``final'' bug in M ETAFONT was discovered and removed. If an error still lurks in the code, Donald E. Knuth promises to pay a finder's fee which doubles every year to the first person who finds it. Happy hunting. !!AUTHORS M ETAFONT was designed by Donald E. Knuth, who implemented it using his W EB system for Pascal programs. It was originally ported to Unix by Paul Richards at the University of Illinois at Urbana-Champaign. This page was mostly written by Pierre !MacKay. ----
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