{Ha'} certainly qualifies as a "first-person imperative" in my book. I also think {DaH} can help to give an imperative flavor to a phrase like {maHIv}, either in its normal position at the front of the sentence, or as a separate adverbial utterance. {maHIv -- DaH!} sounds to me like it's intended as a command addressed to the first-person plural. :) -- ghunchu'wI' 'utlh