Hi all, hopefully this is the correct (sub)forum to ask. I'm trying to undertake my first real (worthy?) module. I understand Textformatters, Markup, and Process modules, but I'm now looking to, I believe, create a module that behaves similarly to the Map Marker module(s); in my case I'm looking to add book information from an external service (insert ISBN or title into a text field and the service returns data that can then fill in other various fields). I'm confused for a few reasons