On Tue, 11 Apr 2006, Donald Ephraim Curtis wrote: > same. For example, selecting one molecule and finding all similar molecules > (finding all water molecules). I was just wondering what facilities are > already included in the ghemical code that would help do this, or any > algorithms that would help. One idea was to convert the molecules using Hello, finding equivalent molecules sounds like a good general-purpose feature ; I'm willing to take this on my "todo"-list. Regards, Tommi