Google site search
This may be old news but is really handy. You can give Google a "site:" option to force your search to be on a specific website, I use it all the time for.. site:advrider.com
It comes in handy for searching the montana wiki page just put in the site:garminmontanagpsr.wikispaces.com in front of anything you want to search (not case sensitive):
site:garminmontanagpsr.wikispaces.com hide map
Will search only the wiki pages for any occurrence of "hide" or "map", maybe too broad of a search but....
site:garminmontanagpsr.wikispaces.com "hide on map"
Will search only the wiki pages for the exact phrase "hide on map"
Try it out! It is a GREAT timesaver. There is lots in the Wiki but sometimes for me is hard to find!