Navagating
Use either left hand index, 'thread' links in green bar at top of page or 'go back one page' arrow.
Printing
Select Print from File dropdown
External links
Currently selecting any external link will take you to the linked website (i.e. it will not open a new window).
Therefore to get back to the wiki you need to click 'go back one page' arrow.
Alternatively you can open links in a new window by left clicking on the link and selecting 'open in a new window'