Segmentation UNDO
Rview now has an undo function: this is limited
to undoing the last edit made (eg to go back after making an error in region
drawing). To go back by one edit select the 'UnDo Last Edit' button on the
segtool (below). Note: Undo returns to the edit stage saved at the last
time a segmentation mode button was selected. So... when you have completed
a sequence of manual edits that are acceptable: Hit the segmentation mode
button again to fix them in memory before you make a mistake and you need
to undo!
