Directory obsolete/macros/plain/contrib/fontch20

README File of the package fontch.tex   V2.0 2007/09/04
 fontch.tex:  Macros for changing fonts and sizes in plain TeX

 Rodrigo Medina (IVIC) rmedina@ivic.ve

Suggested locations: .../texmf/tex/plain/fontch/
                     .../texmf/doc/tex/fontch/README.txt
Licence: LPPL

Components
----------
The fontch V2.0 package is composed of the following files:
   README.txt   -- This file 
   fontch.tex   -- main macros
   bsymbols.tex -- macros for boldface  symbols
   TS1mac.tex   -- macros for the TS1 companion symbols
   DSmac.tex    -- auxiliary file for the DStroke option

Description
-----------
       This package allows, in plain TeX, to change with a single
command the size of all fonts that are used for text input and math input.
Main text fonts of sizes 8, 10, 12, 14, 20 and 24 points are available.
Fonts of sizes 5, 6, 7 and 9 points are used in subscripts and subscripts of
subscripts of other main sizes.
In addition fontch gives support to:
   - boldface math-italic and boldface math symbols,
   - T1 Latin Modern fonts,
   - TS1 companion symbol fonts.
   - AMS fonts for boldface math,
   - Double Stroke fonts for blackboard bold symbols
 
Requierements
-------------
- In order to use the T1 options LMTone and LMTSone, you need to have installed
  the Latin Modern fonts.
- In order to use the AMSfont option you need to have installed the AMS fonts.
- In order to use the DStroke option ou need to have installed the Double
  Stroke fonts.

Installation
------------
        You have only to put the macro files fontch.tex, bsymbols.tex,
 TS1mac.tex and DSmac.tex in any sensible place in the texmf tree, like
       .../texmf/tex/plain/fontch/

It is also commendable to put this README file in a proper place such as

       .../texmf/doc/tex/fontch/README.txt

Usage
-----
   For using fontch.tex with the original TeX OT1 fonts (Computer Modern)
just put at the beginning of the document:
 \input fontch.tex

The file bsymbols.tex provides macro definitions for boldface versions
of math symbols. For using it just input the file where you need it.

The fontch package has four options for handling different kinds of fonts:

  -  LMTone     for Latin Modern T1 fonts.
  -  LMTSone    for the TS1 companion symbol font.
  -  AMSfont    for AMS fonts used for boldface math.
  -  DStroke    for Doublestroke fonts providing blackboard-boldface symbols.

The four options are independent. They are activated by setting the
corresponding variable before calling  fontch.tex. For example for
activating all the four options and using the macros for bold math
put at the beginning of the document:

 \let\AMSfont\relax
 \let\DStroke\relax 
 \let\LMTone\relax
 \let\LMTSone\relax
 \input fontch.tex
 \input bsymbols.tex

NOTES:
-----
 (1) There is one modification of the standard behavior of plain TeX. Plain
     TeX defines for the font #3 the same font (tenex) for text, script and
     scriptscript. That is awfull. The fontch package uses sevenex for
     script and fiveex for scriptscript, as for the other fonts.
     
 (2) The use of files il1-t1.tcx or il2-t1.tcx is recommended together
     with the LMT1 fonts.

 (3) Only the cmcs, cmmib, cmbsy and cmex AMS fonts are supported. These
     are used for small caps and for boldface math-italic and boldface
     greek symbols. The other AMS fonts like the Euler, Cyrillic and extra
     symbols are not supported.

 (4) Only the roman Doublestroke font is supported. The sans serif version
     is not supported.

 (5) There are two main uses of boldface math. One case is the use of
     isolated bold  characters or symbols inside a formula. For this case
     fontch provides bold versions of math synbols and the macro \mb for bold
     math-italic characters.  The plain TeX macro "\bf" yields roman-bold
     characters in math mode.  The name of the bold version of a math symbol
     is obtained adding the prefix "bf" to the name of the normal symbol. For
     example a boldface italic "a" is {\mb a}, a boldface roman "P" is
     {\bf P}, a boldface \Sigma is \bfSigma, a boldface \iff is \bfiff.

     The other case is when one wants to write a complete formula in
     boldface, for example inside a title. For this case fontch has the
     macro \setmathbold that changes the font families 1 (cmmi) and 2 (cmsy)
     to the bold versions cmmib and cmmbsy. The macro  \unsetmathbold resets
     the families 1 and 2 to their original values. These macros should be
     put before and after the formula.

 (6) Usually the macro \setmathbold does not change the whole formula to
     boldface. This is due to the fact that in math mode some symbols
     come from family #0 (cmr) or #3 (cmex) such as "+" or \int. Fontch
     provides macros for the symbols that come from family #0, For
     example the bold version of "(" is \bflparen.

 (7) Math symbols of family #3 (cmex) do not have bold versions. In particular
     \int, \sum and \prod. Never the less \smallint is of cmsy and does
     a bold version. 

Modifications from version 1.3
------------------------------

Version 2.0 is a mayor revision.

There are many improvements such as
 -- Proper handling of smallcaps
 -- Support for bold-math
 -- Support for AMS fonts
 -- Support for blackboard boldface
 -- Correction of bugs and scaling.

The behavior of V2.0 should be compatible with V1.3 except for case explained
in Note (1).
-----------------------------------------------------
%%%%%%%%% Commands of fontch %%%%%%

General Commands
----------------
The package fontch defines the following commands valid for any option.

Commands for changing font size:
        \eightpoint      -- Change to small type
        \tenpoint        -- Change to normal type
        \twelvepoint     -- Change to large type
        \fourteenpoint   -- Change to very large type
        \twentypoint     -- Change to huge type
        \twentyfourpoint -- Change to immense type

Commands for changing family, most already in plain TeX.

        \rm            -- Roman
        \it            -- Italic
        \bf            -- Boldface
        \tt            -- Teletype
        \sf            -- Sans Serif (new)
        \sc            -- Small Caps
        \cal           -- Calligraphic
        \mit           -- Math Italic
        \mb            -- Math Boldface (new)
        \bcal          -- Boldface calligraphica (new)
        \oldstyle      -- Old style digits
        \boldstyle     -- Boldface old style digitsa (new)
        \setmathbold   -- set families 1 and 2 to cmmib and cmmbsy (new)
        \unsetmathbold -- reset families 1 and 2 to cmmi and cmmsy (new)

Command for changing line spacing
        \doublespace   -- Double Space for ten & twelve points



Macros of bold symbols (Require input of bsymbols.tex)
----------------------
Symbols that have a keyword 
  bold_keyword = bf + normal_keyword

Symbols that do not have a keyword
  \bfexcl        -- !
  \bflparen      -- (
  \bfrparen      -- )
  \bfplus        -- +
  \bfcomma       -- ,
  \bfcolon       -- :
  \bfsemicolon   -- ;
  \bfequal       -- =
  \bflbraket     -- [
  \bflt          -- <
  \bfslash       -- /
  \bfgt          -- >
  \bfminus       -- -
  \bfvert        -- |
  \bfVert        -- \|

Command of the DStroke option
-----------------------------
 \ds  -- Double Stroke
                               
Commands of the LMT1 option
---------------------------

Redefined Plain TeX Commands:
  \i , \j , \ae , \AE, \oe , \OE , \o , \O ,
  \ss , \SS , \aa , \AA , \l , \L ,
  \Gamma , \Delta , \Theta , \Lambda , \Xi , \Pi ,
  \Sigma , \Upsilon , \Phi , \Psi , \Omega , \hbar

New T1 Commands for non-latin1 characters

        \lh  -- l'
        \Lh  -- L'
        \dh  -- d'
        \th  -- t'
        \dbar -- d slash
        \Edh
        \edh
        \ij
        \IJ
        \nj
        \NJ
        \thorn
        \Thorn
        \smallzero
        \lguille   -- left guillemot (does not appear in il1-t1.tcx)
        \rguille   -- right guillemot (does not appear in il1-t1.tcx)
        \vispace   -- visible space

Redefined plain TeX accents
  \` , \' , \^ , \~ , \" , \H , \v , \u , \= , \. , \b , \c

Redefined plain TeX math-accents
  \acute,\grave,\ddot,\tilde,\bar,\breve,\check,\hat,\dot

New T1 accents
        \r   -- ring accent
        \k   -- ogonek

New T1 math-accent
        \ring

Commands of the LMTS1 option
----------------------------

TS1 symbols
        \tcchar{#1} -- Character of TS1 table

Redefined plain TeX commands
        \t{#1} --  tie-after-accent
        \P     --  pilcrow
        \S     --  section
        \dag   --  dagger
        \ddag  --  double dagger
        \copyright

Most TS1 symbols (in increasing charcode order)
Some are text versions of symbols of the math mode.

        \arrowl      -- left arrow
        \arrowr      -- right arrow
        \blank
        \dollar
        \caster      -- centered asterisk
        \sequals     -- short equals
        \anglel
        \angler
        \mho
        \bigcircle
        \Ohm
        \bbracketl   -- left double square bracket
        \bbracketr   -- right double square bracket
        \arrowu      -- up arrow
        \arrowd      -- down arrow
        \textstar    -- star
        \born
        \died
        \leaf
        \married
        \music
        \doublevert  -- Double vertical bar
        \perthousand
        \bull        -- bullet (is in manmac)
        \centigrade
        \olddollar
        \oldcent
        \florin
        \Colon
        \won
        \naira
        \guarani
        \peso
        \lira
        \recipe
        \interrobang -- Question+Exclamation
        \gnaborretni -- Question+Exclamation upside-down
        \dong
        \TM
        \pertenth    -- per ten thousand
        \npilcrow    -- narrow pilcrow
        \baht
        \numero
        \abzueglich
        \aestimated  -- Big e
        \openbull
        \SM
        \qbrackl     -- left quill bracket
        \qbrackr     -- right quill bracket
        \cent
        \sterling
        \currency
        \yen
        \brokenvert  -- broken vertical bar
        \feminine
        \copyleft
        \lognot      -- logical not
        \circledP
        \registered
        \degree
        \plusminus
        \twoup
        \threeup
        \micro
        \centereddot
        \reference
        \oneup
        \masculine
        \root
        \onequarter
        \onehalf
        \threequarters
        \euro
        \texttimes
        \textdiv

Bugs
----
  Comments and bug reports are welcome at rmedina@ivic.ve
-.-