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<title>What This Module Does</title>
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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../inform7n.html">Inform7</a></li><li><a href="index.html">multimedia</a></li><li><a href="index.html#P">Preliminaries</a></li><li><b>What This Module Does</b></li></ul></div>
<p class="purpose">An overview of the multimedia module's role and abilities.</p>
<ul class="toc"><li><a href="P-wtmd.html#SP1">&#167;1. Prerequisites</a></li><li><a href="P-wtmd.html#SP2">&#167;2. Now in glorious Technicolor</a></li></ul><hr class="tocbar">
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>&#167;1. Prerequisites. </b>The multimedia module is a part of the Inform compiler toolset. It is
presented as a literate program or "web". Before diving in:
</p>
<ul class="items"><li>(a) It helps to have some experience of reading webs: see <a href="../../../inweb/index.html" class="internal">inweb</a> for more.
</li><li>(b) The module is written in C, in fact ANSI C99, but this is disguised by the
fact that it uses some extension syntaxes provided by the <a href="../../../inweb/index.html" class="internal">inweb</a> literate
programming tool, making it a dialect of C called InC. See <a href="../../../inweb/index.html" class="internal">inweb</a> for
full details, but essentially: it's C without predeclarations or header files,
and where functions have names like <span class="extract"><span class="extract-syntax">Tags::add_by_name</span></span> rather than just <span class="extract"><span class="extract-syntax">add_by_name</span></span>.
</li><li>(c) This module uses other modules drawn from the compiler (see <a href="../structure.html" class="internal">structure</a>), and also
uses a module of utility functions called <a href="../../../inweb/foundation-module/index.html" class="internal">foundation</a>.
For more, see <a href="../../../inweb/foundation-module/P-abgtf.html" class="internal">A Brief Guide to Foundation (in foundation)</a>.
</li></ul>
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>&#167;2. Now in glorious Technicolor. </b>This module consists only of three independent features, and even those are
very similar to each other:
</p>
<ul class="items"><li>&#9679; <a href="2-ef.html" class="internal">External Files</a> is a feature for reading and writing files;
</li><li>&#9679; <a href="2-fgr.html" class="internal">Figures</a> for displaying images; and
</li><li>&#9679; <a href="2-se.html" class="internal">Sound Effects</a> for playing music or other sounds.
</li></ul>
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