What strange or obscure ops restrictions or requirements do you have in your manuals that help or hinders your flights? Such as self imposed operational restrictions or requirements from flight ops. To go a step further what is the strangest thing you saw in your MEL books? The MELs come standard from the manufacturer however this does not restrict the airline from making MELs more restrictive. Has flight ops put into the books MEL restrictions that made your job harder/easier or self-limited the airline? Be as vague and generic as you wish, we don't need to point fingers about flight ops.