5.5.16 ‘@m’: Define FWEB macro, and mark

This command begins the definition part.

@m’ defines an FWEB macro, and also marks the next identifier as defined here. It is equivalent to

@m’ == ‘@M@[

(see Forward referencing).

For a detailed discussion of FWEB macros, see MACROS and PREPROCESSING.

The distinction between ‘@m’ and ‘@M’ is analagous to the distinction between ‘@a’ and ‘@A’. See @a’: Begin code part of unnamed section, and mark.