Builtin animation on ive,osg files

[Chapre]

hi,
how can I create a osg file with complex builtin animation ( similar to "fire.osg" found in vizard resource dir)?
I aim to create a flag that fying to the wind in osg format? Any approche would be helpful.

[Jeff]

The following article discusses complex animations:
http://kb.worldviz.com/articles/1393