Ruby  3.1.4p223 (2023-03-30 revision HEAD)
Modules
Here is a list of all modules:
[detail level 12]
 Exception handlings
 Deprecated macro APIsThese macros are deprecated
 Core objects and their operations
 CRuby Embedding APIsCRuby interpreter APIs
 ruby(1) implementationA part of the implementation of ruby(1) command
 Defining methodsThere are some APIs to define a method from C
 Classes and their hierarchy.
 Write barrier (WB) interfaces: