Preamble - Verbs, use options and a few other preliminaries before the Standard Rules get properly started.

Physical World Model - Spatial relationships; the hierarchy of kinds used to model things and places, and their properties.

Variables and Rulebooks - The global variables and those built-in rulebooks which do not belong either to specific actions or to specific activities.

Dialogue - Miscellaneous phrase and other declarations needed to support the dialogue director.

Activities - The built-in activities and their default stock of rules; and in particular, the locale description mechanism.

Actions - The standard stock of actions, along with the rules which define them; and the command grammar which requests them.

Command Grammar - The default grammar for parsing typed commands in play.

Phrase Definitions - 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.