Hello Rene,
PowerPoint does not have the specific capability that you are looking for
although, as others have shown, the HTML file can be modified, after the
fact, to get the desired result.
If you (or anyone else reading this message) think that PowerPoint should
provide this functionality (without have to resort repeatedly to manual
workarounds), don't forget to send your feedback to Microsoft at:
http://register.microsoft.com/mswish/suggestion.asp
As with all product suggestions, it's important that you not just state
your wish but also why it is important to you that your product suggestion
be implemented by Microsoft. Microsoft receives thousands of product
suggestions every day and we read each one but, in any given product
development cycle, there are only sufficient resources to address the ones
that are most important to our customers so take the extra time to state
your case as clearly and completely as possible.
IMPORTANT: Each submission should be a single suggestion (not a list of
suggestions)
John Langhans
Supportability Program Manager
Microsoft Office PowerPoint for Windows
Microsoft Office Picture Manager for Windows
This posting is provided "AS IS" with no warranties, and confers no rights.
Use of any included script samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm