[Tzdist-bis] Spencer Dawkins' No Objection on draft-murchison-tzdist-tzif-15: (with COMMENT)

[Spencer Dawkins <[e-mail]>]

Spencer Dawkins has entered the following ballot position for
draft-murchison-tzdist-tzif-15: No Objection

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COMMENT:
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I'm a little confused on one high-level point. In this text,

   This document defines the Time Zone Information Format (TZif).  It is
   a binary format used by most UNIX systems to calculate local time.
   There is a wide variety of interoperable software [tz-link] capable
   of generating and reading files in this format.

is it correct to say that you're documenting the existing format, or are you
also defining aspects that are not currently deployed (which would obviously be
"defining")?