The MUSHclient script function pages have been improved.
Previously all script functions were described in a rather large (over 200 Kb) web page.
Now each function is described on its own page, and there is a search facility to help find the one you want.
This is at http://www.mushclient.com/function.php
You can also type in the function name directly if you know it, to save doing the search, like this:
www.mushclient.com/function.php?name=send
(Enter a question mark, and then the name of the function you want, after the page name).