Defines a block of UPML to be rendered in a specific version of UPML.
Attributes
Optional
versionfloat - The version of FBML with which to render the content. (default value is [the current version])
Sample code
<up:upml version="1.0">
The tags that follow rely completely on FBML in version 1.0. This is being rendered in version: <up:upmlversion />
</up:upml>