/gps/particle gamma
#rectangle plane source
/gps/pos/type Plane
/gps/pos/shape Rectangle
/gps/pos/centre 0. 2. 1. cm
/gps/pos/halfx 1. cm
/gps/pos/halfy 3. cm
# isotropic angular distri.
/gps/ang/type iso
# power-law energy distr.
/gps/ene/type Pow
/gps/ene/min 2. MeV
/gps/ene/max 10. MeV
/gps/ene/alpha -2.

# commands below are independent of gps
#
/analysis/filename test3.aida
/analysis/maxeng 15 MeV
/analysis/mineng 1 MeV
/analysis/maxpos 5 cm 
/analysis/minpos -5 cm
/event/printModulo 10000
#/control/execute display.mac
/run/beamOn 10000