This morning I was watching another video of Soyuz docking to the ISS (Expedition 45/Visiting Crew Docks to the Space Station).
The commentator noted that the two quantities $\rho$ and $\dot\rho$ in the lower-left are the range and range-rate, respectively. Retrospectively this is pretty obvious, but I had never thought about it before. This got me a little curious and I tried to look up what all the other numbers mean, with no luck.
What are the quantities displayed on the Soyuz docking camera? I'm particularly interested in the right-hand side, which looks like something to do with the orientation of the spacecraft or station.