I am posting this for visibility since I just discovered this after ReTool-ing for a month. (I know I could have read the docs before diving in... but I digress)
I was implementing my own error branch with the Switch block and if/else until one day, I decided to explore more. To my delight, there is built in error nodes!!!
Oh now I have to go rework some things... but I am happy for this discovery.
In my humble opinion, this should be more visible instead of buried in settings with not much explanation for the toggle. The option leads to much simpler error handling in complex flows.
