I really wish I knew this. Even played this back in the day, only got for nostalgia. I've got well over 200+hrs and the fact I recently and accidentally learned about the Shift controls.. They never explained any of these controls. Granted, it is not a difficult game in the slightest (aside from DLC missions) but knowing the Shift controls allows your units builds to add to their queue, allows yo to make better parol routes and even clear multiple debris from the battlefield. Seems a bit of an over-site to not at least mention this tidbit. My first and still one of my favorite RTS games, still get nostalgia when I boot it up.
