Sample Code for Creating an Extension

I am especially interested in extending or creating a field level ABAC for something like the field visibility extension. Do you know where I might look for a github/bitbucket or other repo for an example? Also is there any documentation on creating your own extension (I do not see that in the help file). Thank you!

You need to understand template structure first before creating your own extension. Please read help file topic “Customizing Template” as a start.