We have a "wait" command.
The wiki:o wrote: Wait(W)
If issued at some point in a command queue (holding shift for multiple commands) the unit will wait at that point in the queue until it is queued another wait command(which should cancel the other one out), or unitl it is given a non-queued order (no-shift, cancels command queue aswell as normal). If it is loaded by a transport while waiting, it will cancel the wait command once it has been unloaded. (I Haven't Tested this functionality, someone should try it out and see what it acctually does... got this from the forums  (http://taspring.clan-sy.com/phpbb/viewt ... it+command))
The actual use of this function goes more like this. Start issuing your chain of commands (Holding Shift). BEFORE a command that you want your units to wait for a go command to execute, hit Shift+W. Now, to cancel the first wait queued on this group, and have them continue with the rest of the queue, hit W. Many of these wait waypoints can be chained together. Note, that if you hit W before some or all of the selected units have completed the command before the wait, only those that have completed the preceding command will continue.
XTA snipers can cloak. I'm pretty sure many know this, but i've met some that was really suprised.
Alt + and clicking on a factory unit will end the current production and start building the one you selected. Yes, you do not have to remove all other units to start a new queue.
You can host replays. Just check the host window out.
You can share your commanders. The first number indicate witch commander you have. If 2 pepole have the same of this number, they share that commander.
... i'm to lazy to think of any more ideas that pepole suddenly realise exist. Help me out!