NWN1 uses danglymesh (fleximesh) to simulate swaying/dangling. It is to be found e.g. on cloths and hairs of creature models, but also some placeables or tiles have meshes, which make use of this, e.g. flags.
This is a tutorial on how to create a danglymesh in Blender 2.79, but the process is pretty much the same for 2.8 (and higher, I'd guess).
Happy dangling!
You'll need Neverblender for this:
https://neverwintervault.org/project/nwn1/other/tool/neverblender-27
https://neverwintervault.org/project/nwn1/other/tool/neverblender-28
English is not my native language, so you might stumble upon weird sentences, grammatical or spelling mistakes. But I hope, that it’s understandable enough.
Special thanks go out to:
Symmetric for his great Neverblender-tool and his help on how to create a “danglymesh” in Blender (which differs a bit from the way it is done in [G]Max).
Zwerkules for his tip regarding the render order, which plays a role, when combining alphas and danglymeshes (see comments on the Geralt-delivery - https://neverwintervault.org/project/nwn1/model/witcher-1-creature-conve...).
Always a treat to see new tuts !! (thats not a typo,
)
Interesting little note. Bare pdf's can be downloaded in two ways. First way is to just click on it and wait until the pdf loads into your browser. Then you should be able to save it. The second way is to right-click and save linked content. Now the really interesting thing here is that method 1 results in the download count increasing. However method two doesn't. So people who hate using a browser to read pdfs are left in a little dilema. To download straight to disk or to increase the download count...
TR
Thanks! Intresting finding, Tarot! So to all you downloaders: Please open the PDFs at leat once in your browser, so ALL PDF-authors get a rough number regarding the download count.

I always bundle mine in a 7zip archive. That way you are guaranteed to get a download count.
TR
Sorry for my slowlyness! And: SMART, Tarot! :D Next time...