I've updated the Fulcro RAD book! There is a new chapter that has been desperately needed that describes how to go about doing the most common "outside the box" customization to RAD forms. RAD is a rapid-application development library add-on for Fulcro. It leverages Fulcro, React, and database/rendering plugins to allow you to quickly create full-stack web/mobile/desktop React applications in a declarative manner that eliminates a huge amount of manually-written UI, networking, and database code. https://book.fulcrologic.com/RAD.html For those that want to jump directly to the new content: https://book.fulcrologic.com/RAD.html#_advancing_your_forms_taking_control_of_form_implementation