Here is a list of known peculiarities, some of them bugs, others just features and others limitations, and there is always that class of things I simply have not understood how it works.
Inertia toggle under the
More button from the Top Row Window.
Although starting virdir is very similar to partiview,
% parti gal2.cf or, % virir gal2.cf
partiview user will need to relearn a few modes to
get used to virdir. In particular, at AMNH starting virdir will
probably cause your console screen (which is normally panel#1 on the
dome) to go dark with no visible command prompt. To regain control,
type the commands (blindly)
raise
fly
idle
which will put virdir in fly and animation mode.
Here are some important modes, make sure you keep the mouse in the console window. It is easy to get it lost in any of the other 6 displays which are only visible on the dome.