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- 1. The hidden line algorithm is not perfect. The back of the object
- can bleed through to the front. We should put in a option of not
- drawing the back at all.
-
- 2. The list of available devices is often longer than the length of
- a screen. This output should be sent through a pager.
-
- 3. On some devices, such as X11, there can only be one active plotting
- window.
-