Setting up rays.
The sheets referred to here are those that appear on the program screen:
Sheet 1, type of particle and form of energy:
(Advanced option, disable tests for small kinetic energy.)
Sheet 2, source of rays:
Sheet 3, space-charge:
Sheet 4, advanced options:
(3D only) Quantised charges.
(3D only) Calculate phase space.
(3D only) Add image force.