Huh.  According to the render settings help, the "Antialias" checkbox will "Antialias scene when rendering in Preview Mode".   Which may relate to the use of the "Render Now (Preview)" button, and not the normal display of the working preview window.  So possibly Poser does not have the capability to antialias the preview window at all.

In which case, my being able to anti-alias the Poser 7 preview window may be a fluke.

So I ask: do any of you have an anti-aliased preview window in your version of Poser, under normal working conditions (that is, other than after using the "Antialias Document" menu option)?  Do all of you have jagged-edged previews?

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Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.