I am curious what the grammar rule is behind the following sentence,<br/><br/>"I comprehend all restraint of motion, caused by an external obstacle, be it a house; or an island.<br/><br/>There is no conjunction before "be it a house", nor a semicolon. <br/><br/>Can anyone please explain the rules? thanks.<br/><br/>ps. I was thinking maybe it is a transformation of <br/><br/>"I comprehend all restraint of motion, caused by an external obstacle, whether it is a house or an island".<br/><br/>And here "whether" is the conjunction ??