I have the CNTTS on Logos. It has been helpful. However, I can't figure out how to do a really effective search. Searching for the occurrence of a single manuscript is easy enough. However, I would like to do more useful searches. The example I have given elsewhere is this. How would I search for every single variance occurrence of a third column code "50" and final column code "TR"? Of course, there could be many helpful variations.