[Zope] lower tags in ZPT

Hello, I realized that ZOPE converts all Tag's in page templates to lower case, e.g. <n1:Tag1>Abc</n1:Tag1> <n1:TagTag>Abc</t1:TagTag> is turned into <n1:tag1>Abc</n1:tag1> <n1:tagtag>Abc</t1:tagtag> ... all tags are now lower case. Are there any methods to avoid this behaviour? The workaround is to use python script with print statements, but that can't quite be the only solution, can it? Cheers, Hannes