which which [object-type] thing-to-match. This command shows
you what things match you query. For example, if you have
a player named "Igor The Ferret" and an object called
"ferret chow", a "which ferret" will show you both matches
and their object ids. A "which object ferret" will only
show the "ferret chow", however. Since the look command
does not show object ids after the names of things you
own, the 'which' command is the quickest way to find out
the number of any particular object.