Set the default segments for circles?

[CalypsoArt]

I'm building a model with a lot of arcs and circles. I would like to up the default number of segments. Is there a way to do this? I understand the increased geometry ramifications.

[TIG]

If you set the default[s] at the offset of opening the model - separately for circle and arc ! - then they are remembered during the use of that model.
But next time they'll revert to the built-in defaults.

There have bee attempts [at least on PC] to run a 'macro' key-stroke tool as SketchUp starts to reset the circle/arc segments...
This old one probably won't work:
http://sketchucation.com/pluginstore?pln=SetArcCircleDefaults
This old one [mine!] just might:
http://sketchucation.com/forums/viewtopic.php?p=593781#p593781