Worked well for 2+ years on short texts. THEN while editing a complex list, and saving multiple copies with same fairly long file name each with few added characters to distinguish from previous copies, all copies disappeared!! Poof! Have no idea what happened, but hours of work lost despite apparently saving as one would... Another nuisance: the save icon right next to undo -- so easy to undo what was just done. Is there a file name length limit? I'm looking for something safer.