Free tiles: 

Hide the toolbar.

Hide the message box.

Can’t save; select a board first.

Can’t save; the selected board is already saved.

Save changes to the selected board.

Unlock the selected board.

Can’t lock; select a board first.

Lock the selected board.

Can’t clear; the selected board is locked.

Can’t clear; select a board first.

Clear the selected board.

Can’t delete; the selected board is locked.

Can’t delete; select a board first.

Delete the selected board.

Can’t delete; select a group first.

Delete the selected group.

Can’t edit; the selected board is locked.

Can’t edit; select a board first.

Edit the name and dimensions of the selected board.

Can’t edit; select a group first.

Edit the name of the selected group.

Can’t create a new board; select a group first.

Create a new board in the selected group.

Create a new group for boards.