[Dion]

I think what their saying is you can't deselect units after they've been selected. You can only "deselect" units by not selecting them in the first place.

In my opinion this is both good and bad. Good, because this requires you to really pay attention to what your doing, making you focus on your battle plan. Bad, because this is really fatiguing to the player, which causes players to make a lot of simple mistakes, which really adds up over the course of the game, becoming a major problem.