Now, we are going to do a concordance on a part of speech. The BNC uses mark-up like this:
<w PRP>at <w AT0>the <w AJ0>great <w NN2>houses
so each preposition is marked <w PRP> just before the preposition itself. The aim is to see all the prepositions in a selected text from the BNC. With a BNC text file chosen, type <w PRP>* as the search-word (the asterisk is needed because a word follows directly after the part-of speech tag) and press OK.
WordSmith checks whether the angle-brackets are text characters or tag-openers and -closers:
Here we answer Yes.
You see the prepositions and their tags (but no other tags).