# Appendix

This section covers some less-common Chisel topics.

* [Experimental Features](appendix/experimental-features)
* [Upgrading from Scala 2.11](appendix/upgrading-from-scala-2-11)
* [Upgrading from Chisel 3.4](appendix/upgrading-from-chisel-3-4)
* [Versioning](appendix/versioning)
