Here is a list of all topics with brief descriptions:

API for Reactions	API for use in inline reaction bodies
Constants	Constants provided for convenience and readability
Utilities	Useful functions for application developers
Platform API	API for functions that have platform-specific implementations
Internal	API mainly used internally, but occasionally useful for users
Modal	API used internally to support modal reactors
Federated	Functions for federated execution
Tracing	Functions for tracing
RTI	Functions for the runtime infrastructure for federated execution