Sorry for my previous comment. I was commenting before reading the entire post and was missing the point. On a sidenote, its often enough and helpful to just list the options with program -h or –help . Sometimes the help option has more information or is easier to understand than the man document.
When I search for options in a man document, I usually try it with putting a dash in front of it as -x or –ignore in example. For really large documents sometimes it can help to add a space before it " -x" or a comma after it "-x, " depending on how its actually written. BTW the man program itself has a builtin help you can show by just pressing h while looking at a document.