<spanclass="sectionpurpose">The titling line and rubric, use options and a few other preliminaries before the Standard Rules get properly started.</span></p>
</li>
<li>
<pclass="chapterentry"><ahref="S-pwm.html">
<sponclass="sectiontitle">Physical World Model</span></a> -
<spanclass="sectionpurpose">Spatial relationships; the hierarchy of kinds used to model things and places, and their properties.</span></p>
</li>
<li>
<pclass="chapterentry"><ahref="S-var.html">
<sponclass="sectiontitle">Variables and Rulebooks</span></a> -
<spanclass="sectionpurpose">The global variables and those built-in rulebooks which do not belong either to specific actions or to specific activities.</span></p>
</li>
<li>
<pclass="chapterentry"><ahref="S-act.html">
<sponclass="sectiontitle">Activities</span></a> -
<spanclass="sectionpurpose">The built-in activities and their default stock of rules; and in particular, the locale description mechanism.</span></p>
</li>
<li>
<pclass="chapterentry"><ahref="S-act2.html">
<sponclass="sectiontitle">Actions</span></a> -
<spanclass="sectionpurpose">The standard stock of actions, along with the rules which define them; and the command grammar which requests them.</span></p>
<spanclass="sectionpurpose">Additional phrases to do with interactive fiction, to add to the much larger collection provided by Basic Inform; and the final sign-off of the Standard Rules extension, including its minimal documentation.</span></p>