Consider using <var> for IDL arguments

[annevk]

For instance,

constructor(DOMString message = "");

to indicate that message is an interchangeable variable name.

[jmdyck]

If Bikeshed wanted italic IDL parameters, wouldn't it just change the CSS highlighting rules rather than require <var> around every parameter in the source?

[tabatkins]

Just to make sure - this is a request for the IDL parser/highlighter to use var wrappers around argument names in IDL blocks?

[annevk]

Yeah, that seems better semantically and would make them match up with the method definitions in prose where we similarly use <var> to denote the argument names.