Standard spatial and velocity, and inside-out velocity polar coordinates for a model mCV with ballistic and magnetic accretion flows only. The top and middle panels show the standard spatial and velocity polar coordinate layout, respectively. The bottom panel shows the inside-out velocity polar coordinate layout. The assumed binary system parameters for the model are: a primary mass of 0.8 M_⊙; a mass ratio (q) of 0.2; an orbital period of 0.083333 d (~120 min) and an inclination of 87°. The C.O.M. of the binary is marked with a plus (+) while that of the primary and secondary are marked with crosses (×). Overlays are shown for the Roche lobe of the primary, the accretion stream from the secondary towards the primary (up to an azimuth angle of 60°), as well as for magnetic dipole field lines at 10° intervals from 20° to 60° in azimuth around the primary. The assumed dipole axis azimuth and co-latitude are 35° and 15°, respectively.