I had written a page full of handwritten notes and was modifying a
handdrawing by "lasso-ing" parts of the sketch in order to move it a bit
sideways when suddenly the entire remainder of that page (i.e. ALL content
below that sketch - about an hour's work!) disappeared!

I quickly tried a few undo's to get my notes back but they did not reappear!
They are lost! How can that be???

I am very frustrated because if that happens again I will have to revert to
paper and pencil again! I simply can not afford to have that happen every
now and then!

Michael