I haven't tried this, but I've read that this is the rule of thumb: if you've been working in stockinette, or something similar, and want to then begin a cable, but don't want it to pull in compared to the stockinette, you increase stitches below each cable, adding as many stitches as half the cable's width. So, if the cable is two stitches crossed over two stitches, you'd increase two stitches before beginning it.
Haven't tried it....
KnittingHelp Queen Bee
"There is a vitality, a life force, an energy, a quickening that is translated through you into action, and because there is only one of you in all of time, this expression is unique. And if you block it, it will never exist through any other medium and it will be lost. The world will not have it. It is not your business to determine how good it is nor how valuable nor how it compares with other expressions. It is your business to keep it yours clearly and directly, to keep the channel open. You do not even have to believe in yourself or your work. You have to keep yourself open and aware to the urges that motivate you. Keep the channel open."
— Martha Graham