Tags and keywords
The Doc` function
makeArgRuleDef
creates a help Rule for an argument with a default with keys compatible for:
The 'def$arg' may optionally be overridden with a default for a given usage context.
Please note that at this stage we are only examining use of the Webel '$arg$' help holders conventions in lower-level packages, which rely on "manual" naming conventions; in later slides we'll see how Webel extensions of MTools for OO such as the MArg class can be used to encapsulate the help holders for the Webel arguments convention.