Feeling lost? This is covered in the guide Context commands
[a] new message command (named|with [the] name) %string%
Creates a message context-menu command. Its name may contain spaces and capitals (1 to 32 characters).
A context-menu command shown when right-clicking a message (Apps > name). It has a name and nothing else; answer it in 'on message command' with 'target message', or declare it with the 'message command' structure.
Creates a message context-menu command. Its name may contain spaces and capitals (1 to 32 characters).
Syntaxes elsewhere in DiSky that return Message Command.
Hand-written guides that cover Message Command.