General

is a symbol to which general system messages are attached.

Details

When you refer to a message with name s::tag in On or Off, the text of the message is obtained from General::tag if no specific message named s::tag exists.

Define a general message:

Wolfram Language code: General::general = "This message will work for any symbol.";

Wolfram Language code: Message[f::general]

Define a function that uses the system message when there are too many arguments:

Wolfram Language code:

f[args___] /; If[Length[{args}] ≠ 1, Message[f::argx, f, Length[{args}]];False, True]  := 
	Module[{x = First[{args}]}, x ^ x]

Wolfram Language code: f[1, 2]

This is the same as what a system function like Sin does:

Wolfram Language code: Sin[1, 2]

The text is in General::argx:

Wolfram Language code: General::argx

Top