"During the call, New York said that developers really should not change the HTML. If developers do manually modify the HTML code, he said that IBI could refuse to help with any web page issues."
I suspect that the New York help desk person probably means that a developer should not monkey around with the HTML/XML document which the HTML Composer generates. I agree wholeheartedly (I might covertly not follow that mandate, but I support the philosophy).
- Generated HTML/XML documents created by HTML Composer: do NOT manually edit
- Generated Report logic from Report Painter: don't dismiss it entirely; try to develop with it so that the person after you can use a GUI tool