Latin dictionary genius

I have to share this tool, because it is total genius.  I just recently started using the Latin Dictionary Headword Search, which is part of the Perseus project.

latin dictionary headword search

I'm using it in my current work transcribing Johannes de Rupescissa's Sexdequiloquium.  What makes it so useful is that you can enter the first couple letters, the last couple of letters, OR the middle letters, and the dictionary will give you a list of all of the words containing these letters.  It is  brilliantly useful. 

Just remember that you may have to adapt the orthography, if you are a medievalist:  e => ae