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3. When doing the Tutorial (it's a great Tutorial BTW!! Kudos!) I noticed that a few times Zope failed to render the page correctly and displayed chunks of ASCII from the dtml page, below the ZOPE logo. I have a feeling it might be connected to having or not having a newline character as the last character in the dtml file.

Do you use Mozilla ? I observed such a behaviour when using the back button. I think it's a caching bug.

Yup! That's exactly how it happened :). So, that's what it was? But why I haven't seen this before? I click the back button all the time.