15.59  PROJECT 

PROJECT [ADD|AVERAGE] [INTEGRATE[=ON|OFF]] [SPLIT[=ON|OFF]]
          [SETS=[FROM] n1 [TO] [n2]] [SELECT="name"] {X|Y|Z}=[v|
          FROM v1TOv2[BYv3|N=n]]} [...] [APPEND[=ON|OFF]] [NAME="name"]
          [LOG[=ON|OFF]]

Forms  1 or more projections of mesh data parallel to one of the axes.  DX
is set to half of the bin width and Y is either the sum  or  average  over
the  mesh  values.   If  available  Z=the mean over the summed coordinate.
This forms the projections from all selected mesh data.