Tag Type C++ code (built in to libHForm/
Attributes name=string Required. The name of an HTTP header to override, or add to the list sent to the client.
content=string Required. The content for the named HTTP header.
Contained Tags None.
Related Tags Meta tags are ignored unless they appear in the Head section.

Meta tags in HForm's are very much like META tags in HTML, except that the server fakes the header rather than relying on the client's ability to do so. Here's a meta tag that instructs the client to reload the document every 60 seconds:
  {Meta name="Refresh" content="60"}