The Clues panel is used to edit the clues of the current crossword. It supports sorting by any column, hiding / showing individual columns, and highlighting complete / incomplete fields (for example, here no clues are filled, so all the Clue fields are highlighted red).
This Crossword grid displays the current crossword. It can be edited, reshaped, filled with words automatically, cleared, and much more. Selecting a word in the grid also selects that word in the Clues panel.
This element in the rightmost corner of the Status bar displays the current version of pycrossword. If there is an update available, a notification is shown next to the version. Double-clicking the version launches the app update process.