As someone new to ROS I find it very
frustrating to have the pre-catkin documentation in the Wiki.
I would suggest you quickly move the pre-catkin material to a
separate Wiki for those still using those versions. Then begin a
rolling update system for new releases. You might keep three
release in the main Wiki while rolling previous releases into a
historical Wiki separate from the pre-catkin Wiki. That might
entail too much work, I realize. Maybe a diff/merge through a
version control system would work? I suggest that anyone working
with versions 3 years out of date probably can figure out the
documentation even if it is not perfect.