kent sin wrote:

<meta http-equiv="content-type" content="text/html; charset=utf-8" tal:attributes="content string:text/html; charset=$encoding">

You're more likely to get a response to ZPT questions on the ZPT mailing list. tal:attributes can have multiple parts, separated by semi-colons. If, as in your example, you need a semi-colon *within* a single part, you must double it, like so: tal:attributes="content string:text/html;; charset=$encoding"

How can I fill multiple macros?

If I also want to change the top_bar (As in CMF zpt skin), where should I place it?

I don't understand what you are trying to do. Cheers, Evan @ Zope