St. <dot### [at] dotcom> wrote:
>     Now to the point. ;) I did a few experiments* where I used +a0.0 +am1 
> and the same but with +am3, and there was a significant difference in speed:

  There's no method 3. I guess povray is reverting to method 1.

>     Second from last question, (silly question too): what does the 'am' 
> stand for?

  Antialiasing method.

>     Lastly, how can I improve these jaggies?

  If rendering time is not an issue, you can increase the number of
samples using the +r option. The default is +r3 (which means 3x3 rays).
Try with +r4 or +r5 (and expect heavy slowdown of the rendering).

-- 
                                                          - Warp

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