This command finds the definition of the member the cursor is on. Finding involves roughly the same as the standard Emacs tags facility does—loading the file and searching for a regular expression matching the member.
This command finds the declaration of the member the cursor is on.
This is the same command as RET, but views the member definition instead of finding the member’s source file.
This is the same command as f, but views the member’s declaration instead of finding the file the declaration is in.
You can install a hook function to perform actions after a member or class declaration or definition has been found, or when it is not found.
All the commands described above can also be found in the context menu displayed when clicking Mouse-2 on a member name.