Graph Unit                Unit General Description
 GraphResult Constants     Constant declarations used for Graphic Errors
 Driver Constants          Constant declarations used for Graphic Drivers
 Mode Constants            Constant declarations used for Graphic Modes
 Color Constants           Constant declarations of the standard colors
 8514 Color Constants      Constant declarations of the IBM-8514 colors
 Line Constants            Constant declarations of Line types and styles.
 Text Constants            Constant declarations of Text Type and Style
 Clipping Constants        Constant declarations that control Clipping
 Bar3D Constants           Constant declarations that affect Bar3D
 Fill Pattern Constants    Constant declarations used for Fill patterns
 BitBlt Operators          BitBlt operators for PutImage and SetWriteMode
 Text Justify Constants    Constant declarations for SetTextJustify
 Type Definitions          Definitions for Types, Records and Variables