Hi Edgard,
Unfortunately, there is not a lot of information.
Brahn published some links when he first started doing addins back around 2010.
Check out these two links. They have helpful information.
https://www.clarionedge.com/clarion/addins/some-addin-links.html
https://www.clarionedge.com/clarion/addins/c7-addin-development-status.html
I’ve written several addins. I can help with questions posted to ClarionHub.
Unfortunately, it is a lot of exploring the classes in the IDE to discover what’s available.
I can tell you the dictionary is a private internal class. You can’t do much with it.
Regards,
Rick