A fast way is to look for the last note. It usually, but definitely not always, is the root of the key. If your key shown by accidentals is "C" and the last note is "D", then it could be Dorian. This needs to be verified by the chordal structure. A software could be created to do that for you. But I guess that a proficient musician could see that fast enough without software.

For BIAB, write that mode into the filename. Then you can even search for it in the file explorer.


Desktop; i7-2600k, 8 GB mem., Win 10 Pro, BIAB 2017; RB 2017 - latest build
Laptop: i5-2410M, 4 GB mem, Win 10 Pro, BIAB 2017; RB 2017 - latest build