mortene ("x" means "done" or "fixed"):

        x get rid of C++ stream usage
        x kill SO_ARB_SHADER_SUPPORT define
        x kill SO_GLSL_SHADER_SUPPORT define
        x kill SO_CG_SHADER_SUPPORT define
        x dynamic pickup of libCg.so / cg.dll(?)
        x make all nodes conform to identification mechs for internal Coin nodes
        x make programs context sensitive. Each cache context must have its
          own copy to handle use of the scene graph in multiple contexts.
          It might be easiest to do this by managing several several
          SoGLShaderObjects in SoShaderObject.cpp ??
        - robustify, upon missing GL support, or missing Cg library 
        - sphere_arb.iv: bug on sphere #2 from the left on my ATI Radeon laptop
        - sphere_glsl.iv: bugs upon first *redraw* on my NVidia desktop
        - sphere_cg.iv: better handling of streams of error messages from Cg
        - clean up the SOURCE_HINT #define (use an element to pass on error messages?)
        - Cheshire Cat for classes in public API (may be ok already)
        - check all public API elements against TGS Inventor
            x SoShaderProgram is SoGroup, should perhaps be inheriting SoNode
            x SoShaderParameter has a similar incompatibility
        x make sure public and private headers are handled correctly
        - trim header-file inclusion
        - grep for FIXMEs, and check all of them
        - write API documentation

        -> copy to Coin-2 (for 2.5.0 release?)
        -> example program(s) and/or iv-files
                => handegar has been doing some stuff


martin:
  - array/matrix parameter
     X GLSL: seems not to work properly
     - ARB: not supported yet


some ideas by martin:
  - improving support of samplers

  - "stand alone" SoShaderParameter, e.g.

     Separator {
      SoShaderProgram { ... init shader and params here ... }
      SoCube {} # some geometry
      SoShaderParameter1f { ... assign new value to params ... }
      SoCube {} # more geometry
     }

  - "stand alone" SoShaderObject, i.e. the same as above
    -> especially useful in GLSL, where one could dynamically exchange 
      shader-subfunctions (due to the compile/link paradigm)