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<TITLE>SDF 2.001: SDF Guru Guide: Creating a New Format Driver</TITLE>
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<H1>1. Extending SDF</H1>
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<H2><A NAME="Overview">1.1. Overview</A></H2>
<H3><A NAME="Logical Documents">1.1.1. Logical Documents</A></H3>
<P>A central part of SDF's philosophy is that documents should be specified in a logical manner. In order to make this possible, SDF has been designed to be easy to extend.</P>
<H3><A NAME="Documenting Extensions">1.1.2. Documenting Extensions</A></H3>
<P>If you do extend SDF and other people need to use your extensions, please try to document things. Within the SDF distribution, the SDF document catalog (doc/catalog.html) provides a link for local documentation (doc/local/) which you may wish to use.</P>
<H3><A NAME="Packaging Extensions">1.1.3. Packaging Extensions</A></H3>
<P>If your extensions would be useful to a wider audience, please consider packaging them into an SDF library or module, documenting the features and notifying people on the SDF mailing lists.</P>
<H3><A NAME="What Can I Create">1.1.4. What Can I Create?</A></H3>
<P>Almost every part of SDF is extensible. As a rule, the most commonly created extensions are new macros and new filters. However, creating new paragraph, phrase and table styles is also quite simple.</P>
<P>Details on how to create these things and other SDF entities are given below.</P>
<P><A HREF="ex_mac.html">Creating New Macros</A></P>
<P><A HREF="ex_filt.html">Creating New Filters</A></P>
<P><A HREF="ex_para.html">Creating New Paragraph Styles</A></P>
<P><A HREF="ex_phras.html">Creating New Phrase Styles</A></P>
<P><A HREF="ex_tbl.html">Creating New Table Styles</A></P>
<P><A HREF="ex_look.html">Creating New Looks and Document Styles</A></P>
<P><A HREF="ex_dvrs.html">Creating a New Format Driver</A></P>
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