about to do

*about to do something

in the process of doing something. (*Typically: be ~; get ~.) I'd better be about my yard work.
References in classic literature ?
when some one is about to do an irreparable deed through ignorance, and makes the discovery before it is done.
Fixed-hour prayer means that you are doing the same thing your fellow Christians have just done or are about to do or are doing in your time zone.
He said, "Come back to the Board because we're about to do two or three films and we need you.