Version 9.12.0 of the Korp frontend was released today! See the changelog for details.
Most notably, when using the Statistics table, you can now click each cell to get a corpus-specific subsearch!
So you might be looking at nouns following "för" i news texts, and wonder why "för brott" is used so much 8 Sidor (Korp search). You can click the value cell or the Total column cell to get all contexts for that value – or you can click the frequency cell in the corpus column to get contexts specifically from that corpus.
