Sets the description string of <object> to <description>. This is the string that is printed out whenever someone uses the 'look' command on <object>. To describe yourself, use 'me' as the <object>.
Example:
Munchkin types this:
@describe me as "A very fine fellow, if a bit on the short side."
People who type 'look Munchkin' now see this:
A very fine fellow, if a bit on the short side.
Note for programmers:
The description of an object is kept in its .description property.
For descriptions of more than one paragraph, .description can be a list of strings.