[Swan-commit] Changes to ref refs/heads/master

[D. Hugh Redelmeier]

New commits:
commit 143bcc375a1a7f4892e82d4dba367440c3a4eb21
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Fri Feb 14 21:03:09 2014 -0500

    add a couple of explanatory comments