Q.v1

1 char[64] --> "Q"
1 int32 --> version 1 
1 char[1024] --> comment
1 int32 --> Dimension D
1 int32 --> Number of Q, N_q
double[N_q*D] --> The Q go here.
                   Q[ 1 ]_x1 Q[ 1 ]_x2 ... Q[ 1 ]_xD
                   Q[ 2 ]_x1 Q[ 2 ]_x2 ... Q[ 2 ]_xD
                     ...
                   Q[N_q]_x1 Q[N_q]_x2 ... Q[N_q]_xD

Qs units should be m^-1 and they should be coordinates with respect to a 
cartesian frame.