### Zephyr
* [[Using Zephyr|doc/zephyr]] <br />
-A guide on using Zephyr today with BarnOwl (and GNU Screen). Aimed at newcomers to Zephyr, and a pretty good reference. See also [the Barnowl wiki](http://barnowl.mit.edu/).
+A guide on using Zephyr today with BarnOwl (and GNU Screen). Aimed at newcomers to Zephyr, and a pretty good reference. See also [the BarnOwl wiki](http://barnowl.mit.edu/).
+
+* [[Using `zcrypt`|doc/zcrypt]] <br />
+A guide to using `zcrypt`ed (encrypted) zephyr classes. Zephyr at MIT (mostly) doesn't support limiting who can sub to a zephyr class, so if you want to have reasonably private conversations, encrypting them is a good idea.
* [[Using SZS (the SMS to Zephyr Relay)|doc/szs]] <br />
Send and receive text messages through Zephyr.
A guide to using MATLAB on Athena.
* [Inessential Zephyr](http://stuff.mit.edu/afs/sipb/project/doc/izephyr/html/izephyr.html) ([DVI](http://stuff.mit.edu/afs/sipb/project/doc/izephyr/izephyr.dvi))([PDF](http://stuff.mit.edu/afs/sipb/project/doc/izephyr/izephyr.pdf)) <br />
-A guide to using the Athena instant-messenging system, Zephyr. Less relevant now that most people use Barnowl, try [this](http://sipb-www.scripts.mit.edu/doc/wiki/UsingZephyr) instead
+A guide to using the Athena instant-messenging system, Zephyr. Less relevant now that most people use BarnOwl, try [this](http://sipb-www.scripts.mit.edu/doc/wiki/UsingZephyr) instead
* [Inessential Bitmaps](http://stuff.mit.edu/afs/sipb.mit.edu/project/doc/ibitmap/ibitmap.html) ([DVI](http://stuff.mit.edu/afs/sipb/project/doc/current/ibitmap.dvi)) <br />
A guide to drawing and displaying XBM bitmaps and other graphics.