Re: Optional method arguments in the DOM

We didn't do optional arguments for the same reasons we didn't do some
other things in the DOM: they aren't supported in enough languages that
they really belong in the core/portable/standardized specification.

I'm not convinced there's a need to re-evaluate that decision.

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"... Three things are most perilous: Connectors that corrode,
  Unproven algorithms, and self-modifying code! ..."
  -- "Threes" Rev 1.1 - Duane Elms / Leslie Fish
(http://www.ovff.org/pegasus/songs/threes-rev-11.html)