Every now and then I want to do a quick math equation, so I threw this in. I also found it useful for debugging global variables or VBScript functionality.
<alias
name="do_eval"
script="do_eval"
match="eval *"
enabled="y"
>
</alias>
Sub do_eval(ByVal strName, ByVal strLine, ByVal astrParam())
world.Note "Eval returns: " & Eval(astrParam(1))
End Sub