Selection
The
Selection mode (
) is used for selecting in a View
(selecting a part of a sequence, selecting nodes in a tree etc.). It
is also used for moving e.g. branches in a tree or sequences in an
alignment.
When you make a selection on a sequence or in an
alignment, the location is shown in the bottom right corner of the screen. E.g. '23^24' means that the selection is between two
residues. '23' means that the residue at position 23 is selected,
and finally '23..25' means that 23, 24 and 25 are selected. By
holding ctrl / 
you can make multiple selections.