How does SelChain AutoChain work?

I saw in this documentation that there is an AutoChain option

https://docs.mcneel.com/rhino/mac/help/en-us/popup_moreinformation/howtochainselectedges.htm

It sounds really powerful but I am not really clear on how to use it or what it does. And I can’t find it as an option on my SelChain command. Thanks.

Hi -

AutoChain is not an option in the SelChain command. In that command, auto-chaining is always on.
In some commands, e.g. Pipe, there is a ChainEdges option. That option has the AutoChain option.
-wim