The media contains the sub-directories:

README File to explain media content
FAQ Frequently Asked Questions of G5G product
For more details you can find a FAQ file in
[.demos.GPHIGS]
[.demos.GPHIGS_GUI]
[.demos.PHIGURE]
DIFF Contains informations between OPGS minor releases.
DIFF_2.1_3.0 Contains different between OPGS version 2.1 and 3.0.
run_time.dir Contains the files used at execution time as well as font file description, drivers files and Phigs Input Manager (PIM).The environment variable OPGS_RUN_TIME will need to be set to the pathname of this directory in order for GPHIGS to function.
For example :
if the installation is done in the directory [users.g5g] :
assign [users.g5g.opgs.run_time] OPGS_RUN_TIME
demos.dir Tree sub-directories :
GPHIGS.DIR, GPHIGS_GUI.DIR and PHIGURE.DIR.
All contains C, FORTRAN sub-directory and a README file.
Each directory contains a file named lopgs useful for linking demonstration program.
For more details see the README file in each directories
include.dir This directory contains all include files needed for compiling G5G product line.
lib.dir This directory contains library needed for linking your G5G product line
Depending of your purchase you find :
gphigsc.olb GPHIGS C library
gphigsf2c.olb FORTRAN interface for GPHIGS
gphigsgui.olb GPHIGS C library and GPHIGS_GUI functionalities
This library contains the GPHIGS library (libgphigsc.a)
phigure.olb PHIGURE functionalities
phiguref.olb FORTRAN interface for PHIGURE
For linking a GPHIGS C program you need :
gphigsc.olb
For linking a GPHIGS FORTRAN program you need :
gphigsf2c.olb
gphigsc.olb
For linking a GPHIGS_GUI C program or GPHIGS C program you need :
gphigsgui.olb
For linking a GPHIGS_GUI FORTRAN program you need :
gphigsf2c.olb
gphigsgui.olb
For linking a PHIGURE C program you need :
phigure.olb
gphigsc.olb
For linking a PHIGURE FORTRAN program you need :
phiguref.old
phigure.olb
gphigsf2c.olb
gphigsc.olb
For linking a PHIGURE C program and access to GPHIGS_GUI you need :
phigure.olb
gphigsgui.olb
For linking a PHIGURE FORTRAN program and access to GPHIGS_GUI you need :
phiguref.olb
phigure.olb
gphigsf2c.olb
gphigsgui.olb
config.dir Contains PHGDVR.c file for configuration list' drivers.
contrib.dir Some sources (X-contrib) with G5G product.