GPS Command Example 9:

/gps/particle geantino
/gps/pos/type Surface
/gps/pos/shape Para
/gps/pos/centre 2. 2. 2. cm
/gps/pos/halfx 2. cm
/gps/pos/halfy 3. cm
/gps/pos/halfz 5. cm
/gps/pos/paralp 0.523599
/gps/pos/parthe 0.523599
/gps/pos/parphi 0.523599
/gps/ang/type iso
/gps/ene/type Lin
/gps/ene/min 2. MeV
/gps/ene/max 10. MeV
/gps/ene/gradient -1.
/gps/ene/intercept 12.

Resulted Distribution Plots: