I think you can use Command , draw something periodically.

On Aug 10, 2012, at 4:04 PM, Matthias Lendholt wrote:

> Hi list,
> 
> I'm not sure whether this has been discussed before on the list: Is it 
> somehow possible to have animated icons in the map? Without implementing an 
> extra MapGraphic layer.
> 
> We are considering an icon for buoys which bob up and down :-)
> 
> 
> Cheers,
> Matthias
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