Yesterday I decided to implement the autosave function as a method of protection against nastiest bugs. It took me one hour only and it was done. When the function is activated, the Math-o-mir will occasionally save your work into the autosave.mom file. After a crash, you can load last-saved data from there.
Another tiny feature I implemented yesterday is the possibility to toggle between formula and text boxes by space bar key. When you click anywhere on empty document area, the math-o-mir will assume that you want to start typing the new formula. By pressing the space bar at that moment, you will convert the formula entry box (blue blinking cursor) into the text entry box (green blinking cursor). This works only while the entry box is still empty.