Forms descriptions
First, you need five descriptions, one for each form.
The command is this "&homid_desc me=blah", and you need one of these for homid, glabro, crinos, hispo and lupus.
For example, two of the five for Mr Cliche, a Silver Fang Ahroun could be
"&homid_desc me=A tall, blonde broad-shouldered man with a ready smile but deep eyes that promise violence if those he loves are harmed".
"&hispo_desc me=A shoulder-tall wolf, with supernaturally alert eyes and teeth that promise death. A ragged battle scar runs across his left rear flank".
You then type five lots of a second set of commands
"&homid_cmd me=$homid:+shift homid;@desc me=[u(homid_desc)]"
"&glabro_cmd me=$glabro:+shift glabro;@desc me=[u(glabro_desc)]"
and so on
Then when you type "homid", "glabro" and so on, you do the shift and change your description all at once.
If your description changes later, then you can type in, for example,
"&homid_desc me=A tall, blonde broad-shouldered man with a ready smile but deep eyes that promise violence if those he loves are harmed. Where his right eye was is a mass of scar tissue"
and it will change things without needing to change the 'homid' command.
Note very similar commands can be used by non-shifters, for example to have someone change from suited-up for the fifteenth floor office, to party clothes for clubbing in.