Whilst in general the information in this Primer is independent of a particular GKS implementation, this is not entirely the case for GKS-3D. The reason is that the goal of the Primer is not simply to describe the functionality of GKS, but to explain in detail how it may be used via the FORTRAN language binding. However, as the binding has not yet been completely finalised for GKS-3D, this chapter explains its use in terms of a particular implementation, namely GKSGRAL-3D Version 2.0.
The text of the Draft International Standard for the GKS-3D
FORTRAN binding was published at the end of 1988,
with voting to finish by May, 1989.
Discrepancies between the FORTRAN DIS and GKSGRAL-3D Version 2.0 are minor,
and are mentioned at the appropriate places within the chapter.
Only the setting of the viewing parameters and the aspect source
flags are affected, and the text will be revised after the final
voting on the standard is complete.
The changes between VSN 1.1 and VSN 2.0 of GKSGRAL-3D
are described in Appendix on Page 
.