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| void * | glutGetProcAddress (const char *procName) | 
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| Determine if an OpenGLUT feature or extension is available. 
 
 In addition to an internal OpenGLUT table, this function will also consult glX (on X systems) or wgl (on WIN32 and WINCE), if the OpenGLUT tables do not have the requested function. It should return any OpenGL, glX, or wgl function if those functions are available. 
 
 
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