Definition of attribute domains is pretty much straight forward. In case you want to delete an entry I find it a little bit awkward that there is no mouse menu to do so. You have to highlight a row and press the delete key.
Did anyone notice that Apple for instance makes really nice notebook computers WITHOUT a delete button on the keyboard. You need an external keyboard to get this button or find other workarounds.
Well, add a right click option to the mouse menu as is done in any other place within ArcGIS.
Years ago we would ask that all mouse action would be backed up by keyboard shortcuts, today I am asking for the reverse 🙂