(read {geometry|camera|aparência|image|ntransform|transform|command} {GEOMETRY ou CAMERA ou ...})          (geometry  thing { INST  transform : T    geom : fred })
          (read  geometry  { define fred
             QUAD
             1 0 0  0 1 0  0 0 1  1 0 0
          })
          (read  transform { define T <myfile})
     See Referencias. See (hdefine ...). See (hdelete ...).