# What does the "simplify" option when exporting to FBX?

While exporting a FBX, I noticed that there is a 'simplify' option:

Unfortunately, the official documentation lacks on detail about that feature and the tooltip just says something like "How much to simplify baked value", which is not helpful:

...
Sampling Rate
TODO.

Simplify
TODO.
...

I'd like to know what it actually does and when to use this option. The default value is 1 for me. Should I just set it 0 to be safe?

The relevant function to read is AnimationCurveNodeWrapper.simplify.