REAL XHIT(6)
: Position and directory cosines (obtained from LXPHO1)
REAL FACENO
: Number of the face hit.
It is .GT. 0 (FACENO = 1...6) if the photon reached
any photomultiplier, -FACENO if was absorbed by plastic
in face no. FACENO. 0 if any error occoured.
REAL PMTX
: LOCAL coordinates of the photomultiplier on face FACENO
REAL PMTY
(in cm)
Example of usage.