Delete residues and gaps
Residues or gaps can be deleted for individual sequences or for the
whole alignment. For individual sequences:
select the part of the sequence you want to delete | right-click the selection | Edit Selection () | Delete the text in the dialog | Replace
The selection shown in the dialog will be replaced by the text you enter. If you delete the text, the selection will be replaced by an empty text, i.e. deleted.
In order to delete entire columns:
manually select the columns to delete | right-click the selection | click 'Delete Selection'