I'm creating some controls for my site by following this document http://www.sitefinity.com/help/developer-manual/controls-adding-controls-to-sitefinity.html
and so far so good. I've done several so far, now, I want to take to the next level, meaning, when my users click the edit button on the backend, I want to give the ability to add an image and have a multilne textbox instead of the basic textbox that is there by default.
So, how can I allow them to add an image?
how can I have it be a multilne textbox instead of the regular textbox?