<> <> <> DIRECTORY Graphics USING [Context]; GL: CEDAR DEFINITIONS = { <> List: TYPE = REF ListRec; ListRec: TYPE; <> <<>> <> <<>> <> <> <<>> <> <<>> <> <<>> <<>> <> Start: PUBLIC PROC[oldList: GL.List _ NIL] RETURNS[dc: Graphics.Context]; <> End: PUBLIC PROC[dc: Graphics.Context] RETURNS [list: GL.List]; <> <> Draw: PROC[context: Graphics.Context, list: GL.List]; <> }. <<>> <<>>