Feature or enhancement

We have a complex CLI tool in python that our users use and we'd like to hide some parameters as "advanced" so
they only show w/ a --advanced-help command.

Pitch

Some parameters are useful for debugging of the script or for advanced features that most users won't care about.
It would be nice to hide these from the common parameters you can see w/ the -h output.

Previous discussion

https://discuss.python.org/t/advanced-help-for-argparse/20319