Controller > find relevant files
The point of it…
Suppose you have identified muscle, fibre, protein as key words in a specific text. You might want to find out whether there are any more texts in your corpus which use these words.
How to do it
This function can be reached in any window of data which contains the 
option, e.g. a key words listing.
It enables you to seek out all text files which contain at least one mention of each of the words you have marked (with 
). Before you click, choose the set of texts which you want to peruse.
What you get
A concordance based on all the words you marked, showing which text files they were found in. But it is a "fussy" concordance: any text files which doesn't have all the words you selected get ignored.