Hi Bryan,
Thank you for your message.
You will need to create a Custom macro and in the macro you can get the content of some editable region like this:
CMSContext.CurrentPageInfo.EditableItems["editabletext1"];
The editabletext1 is the ID of the editable text webpart which content you need. This will also work for the current page, if you want to get some other page you will need to get the corresponding page info object.
Let me know how it works.
Kind regards,
Richard Sustek