The point of it
You may wish to chase up some combinations of search-word and collocate. These functions let you pursue a search onwards to more related or focussed ones.
ofollow-up: you get a new concordance based on the same text files
ohighlighting: you get your existing concordance re-sorted to highlight the context(s) you are most interested in. Here is an example where highlighting picks out words statistically related to LOVE.