Now and then, mainly when im creating huge forms I get CF to generate HTML. The process is usually simple

1. Write code
2. Switch to browser
3. Run page
4. View source
5. See some formatting issue
6. Close source view
7. Go back to editor
8. Ammend code, then go through steps 2 onwards

But Firefox actually helps your here. Once you have viewed the source you can actually just hit F5 to refresh the view/code. Savin just a little bit of your sanity in the process.