-To demonstrate that there is one feature per sequence, clear all selections by pressing [ESC]. Select the [SHIFT] key,
- then insert a gap in sequence 3 at column 95 by moving the mouse.
+To demonstrate that there is one feature per sequence, clear all selections by pressing [ESC]. Hold down the [SHIFT] key,
+ then insert a gap in sequence 3 at column 95 by moving the mouse to that position, then clicking and dragging to the right.