many thanks for this information. gives me some new ideas ,)

guess, my issue is a little bit simpler at all. after export to htm5, i get a zip, which contains a zip. when i extract the first zip, i will find also the lib-folder(s).

these libs are the same for all exported files(?) and referenced in the html-files for showing the model.
i'd like to place the libs on a unique place, change the reference to this path and later i just need to change - one - line in the html to point the zip of the model.

i'll try it this way, create approx 10-15 models and ask some friends to call the diffrent models at the same time to see what happens.