+You can send zephyrs to individuals (as opposed to classes) with:
+
+ :zwrite USERNAME
+
+It is possible to `zwrite` to multiple individuals at once, by listing the
+usernames separated by spaces:
+
+ :zwrite -C USERONE USERTWO USERTHREE
+
+The `-C` option automatically puts the line `CC: USERONE USERTWO USERTHREE`
+in the body of the zephyr,
+although this is only a convention and is not required or enforced.
+
+### Aside: zephyr triplets
+
+All messages are actually sent to a "zephyr triplet" — a class, instance, and recipient. Subscriptions are also made to zephyr triplets. The recipient can be either "*" — to indicate a broadcast message — or a specific individual.
+
+When sending, the default class is "message", instance is "personal", and recipient is "*". `zwrite` supports sending to arbitrary triples with `:zwrite -c CLASS -i INSTANCE USERNAME` — the two examples above use the defaults for the parts that aren't specified.
+
+For subscriptions, the class must be specified. You can specify all instances on a class with "\*", or specify just one instance. You can only sub to recipient "\*" or your own personals (indicated by "%me%").)
+
+### Common classes
+