#### 7.2.100 read

`(read {geometry|camera|appearance|image|ntransform|transform|command} {GEOMETRY or CAMERA or ...})`
  Read and interpret the text in ... as containing the given type of data. Useful for defining objetos using OOGL reference syntax, e.g.

                (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 References. See `(hdefine ...)`. See `(hdelete ...)`.