Quote - This would matter if a user goes to export whatever content to a third party app, but typically they're on their own in that case anyway.  I can't think of any other caveat.

Your selected default measurement unit doesn't matter, it's converted internally to an "agnostic" value to avoid just the trouble you're thinking of.

 

Thanks! This has been worrying me a little, too. More with displacement values than with tiles, but same thing really. If I make something and enter the displacement value in cm... I just HOPE it is converted to something usable for those who use inches or PNU :) I'm glad to know everything is internally converted (to PNU I guess?)

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.