[Zope] RESPONSE.Write question

[Small Business Services]

I have been trying to get a test routine working that uses RESPONSE.write...
without success:

Here is the dtml code I have been using:


<dtml-call "RESPONSE.setHeader('Transfer-Encoding', 'chunked')">
<dtml-call "RESPONSE.setHeader('Content-Type', 'text/plain')">
<dtml-call "RESPONSE.write('Starting')">

<dtml-call "wait(5)">

<dtml-call "RESPONSE.setHeader('Transfer-Encoding', 'chunked')">
<dtml-call "RESPONSE.setHeader('Content-Type', 'text/plain')">
<dtml-call "RESPONSE.write('\n\nDone')">


The 'wait' routine is a simple external method:

import time
def wait(self, secs):
        time.sleep(secs)
        return


What I expected to see was the word 'Started' displayed in my browser,
followed by a 5 second delay, and then see the word 'Done' displayed.

What I get is a 5 second delay and then both 'Started' and 'Done" appear at
the same time.

Any ideas as to what I am doing wrong?

Thanks for the help,

Jonathan