Member()
member(<list>, <word>[, <delim>])
Member takes a list and a word, and returns the position of that word within the list. If the word does not occur in the list, then 0 is returned. Unlike match(), member() does not check for wildcard-ing, and the cases of <list> and <word> are significant. A word is defined as a string which has no interior spaces. So 'hello' would be one word, while 'hello there' would be two.
Example
> say member(This is a member test, member)
You say, "4"
> say member(This is a member test, Member)
You say, "0"
> say member(This is a member test, *e*)
You say, "0"
> say member(This is a member test, is a)
You say, "0"