anchor.diff:  cconstant GL_LIGHTING
   cconstant GL_LIGHT0
   cconstant GL_FLOAT
  +
   decimal
  +
  +GL glGetError (int) glGetError
   
   GL glShadeModel int (void) glShadeModel
   GL glMatrixMode int (void) glMatrixMode
  
positive.code: 
  library GL GL
  hex
  cconstant GL_COLOR_BUFFER_BIT
  cconstant GL_DEPTH_BUFFER_BIT
  cconstant GL_TRIANGLES
  
negative.code: GL glTranslatef sf sf sf (void) glTranslatef
  
  GL glOrtho df df df df df df (void) glOrtho
  
  GL glUseProgram int (void) glUseProgram
  
  GL glGenBuffers int ptr (void) glGenBuffers
  GL glMapBuffer int int (ptr) glMapBuffer
  GL glUnmapBuffer int (int) glUnmapBuffer
  GL glBindBuffer int int (void) glBindBuffer
  GL glBufferData int int ptr int (void) glBufferData
  