RE: [xml-dev] What does "optional" mean?

["Len Bullard" <cbullard@hiwaay.net>]

Although derivable from the three:  not yet or not now.   Irrelevant seems
prejudicial but not wrong.  Lack of knowledge is fundamental
Shannon/Boltzman.

len

-----Original Message-----
From: John Cowan [mailto:cowan@ccil.org] On Behalf Of John Cowan
Sent: Sunday, February 26, 2012 2:45 PM
To: Costello, Roger L.
Cc: xml-dev@lists.xml.org
Subject: Re: [xml-dev] What does "optional" mean?

Costello, Roger L. scripsit:

> I've listed three possible meanings of "optional":
>
>     -- In the first meaning, it indicates: of-lesser-importance.
>
>     -- In the second meaning, it indicates: irrelevance.
>
>     -- In the third meaning, it indicates: lack-of-knowledge.