[whatwg] Tool Implementor Audience

[Smylers]

One of the audiences for HTML is stated as "implementors of tools that
are intended to conform to this specification":

  http://www.whatwg.org/html5#audience

That seems circular, verging on tautologous: a tool author wondering
whether this spec is relevant to her (and therefore whether her tool
should aim to conform with it) isn't any better informed having read the
above.

And conversely, an author of a lousy tool (which attempts to parse
webpages but does so in a way not compatible with how browsers do) might
have this spec pointed out to him.  But he can claim it doesn't apply to
him, since he's never intended his tool to conform to it.

Could we make it something like "implementors of tools that emit HTML or
parse Web content"?

Smylers