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## Font definition file commands

The .fd files should contain only commands from this section. Note that those commands can also be used outside a .fd file: they can be put in package or class files, or even in the preamble of a document.

\ProvidesFile{<file-name>}[<release-info>]

The .fd file should announce itself with a \ProvidesFile command, as described in LaTeX2e for Class and Package Writers. For example:

Declares a font family <family> to be available in encoding scheme <encoding>.

Checks that <encoding> was previously declared.

This example refers to the Computer Modern Typewriter font family in the Cork encoding:

\DeclareFontFamily{T1}{cmtt}{\hyphenchar\font=-1}

Each .fd file should contain exactly one \DeclareFontFamily command, and it should be for the appropriate encoding/family combination.

\DeclareFontShape {<encoding>} {<family>} {<series>} {<shape>}

Declares a font shape combination; here <loading-info> contains the information that combines sizes with external fonts. The syntax is complex and is described in Section 4.3 below.

The <loading-settings> are executed after loading any font with this font shape. They are executed immediately after the `loading-settings' which were declared by \DeclareFontFamily and so they can be used to overwrite the settings made at the family level.

Checks that the combination <encoding><family> was previously declared via \DeclareFontFamily.

Example:

\DeclareFontShape{OT1}{cmr}{m}{sl}{%
<<5-8>> sub * cmr/m/n
<<8>> cmsl8
<<9>> cmsl9
<<10>> <<10.95>> cmsl10
<<12>> <<14.4>> <<17.28>> <<20.74>> <<24.88>> cmsl12
}{}
An .fd file can contain any number of \DeclareFontShape commands, which should be for the appropriate <encoding> and <family>.

The font family declarations for the OT1-encoded fonts now all contain:

\hyphenchar\font=`\-
This enables the use of an alternative \hyphenchar in other encodings whilst maintaining the correct value for all fonts.

Rainer Schoepf
Thu Jul 31 16:42:26 MEST 1997