parameters: (item_name : str='all')
docstring: Marks the given item as dirty and recreates the OpenGL display lists. 
      You may need to call this if you modify an item's geometry, for example. 
      
      If things start disappearing from your world when you create a new window,
      you may need to call this too.
docstring_summary: Marks the given item as dirty and recreates the OpenGL display lists. 
      You may need to call this if you modify an item's geometry, for example. 
      
      If things start disappearing from your world when you create a new window,
      you may need to call this too.
docstring_tokens: Marks the given item as dirty and recreates the OpenGL display lists . You may need to call this if you modify an item s geometry for example . If things start disappearing from your world when you create a new window you may need to call this too .
function: def dirty(item_name : str='all') -> None:
      """Marks the given item as dirty and recreates the OpenGL display lists. 
      You may need to call this if you modify an item's geometry, for example. 
      
      If things start disappearing from your world when you create a new window,
      you may need to call this too.
      """
      scene().dirty(item_name)
function_tokens: def dirty ( item_name : str = 'all' ) -> None : scene ( ) . dirty ( item_name )