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<H2><A ID="SECTION00334000000000000000"> Declarations</A> </H2>
<P> Most of the work of a class or package is in defining new commands, or changing the appearance of documents. This is done in the body of the package, using commands such as | | or ||.
<P> L<SUP><SMALL>A</SMALL></SUP>T<SMALL>E</SMALL>X2<SUB>e</SUB> provides several new commands to help class and package writers; these are described in detail in Section <A HREF="node29_ct.html#Sec:commands"><IMG ALT="[*]" SRC="crossref.png"></A>.
<P> There are three things that every class file <I>must</I> contain: these are a definition of || and values for || and ||. So a minimal document class file is: <PRE> </PRE> However, this class file will not support footnotes, marginals, floats, etc. nor will it provide any of the 2-letter font commands such as ||; thus most classes will contain more than this minimum!
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