GPS Command Example 16:

/gps/particle geantino
/gps/pos/type Volume
/gps/pos/shape Para
/gps/pos/centre 2. 2. 2. cm
/gps/pos/halfx 2. cm
/gps/pos/halfy 3. cm
/gps/pos/halfz 4. cm
/gps/pos/rot1 1. 0.57735 0.
/gps/pos/rot2 -0.57735 1. -0.66667
/gps/ang/type iso
/gps/ene/type Brem
/gps/ene/min 1. keV
/gps/ene/max 2. MeV
/gps/ene/temp 2e9

Resulted Distribution Plots: