This works but will include the content of the macro document in the syntax 1.0 document. This is not a problem in syntax 1.0 as long as only white spaces or white lines are coming out of the document. Now we could make a slight modification to includeMacros to catch the resulting content and not show it.

some white spaces here

Hello World from a syntax 1.0 macro

    

$xwiki.getDocument('Help.SupportPanel.Content').translatedDocument.title

Failed to execute the [include] macro. Cause: [Current user [incubator:XWiki.evalica] doesn't have view rights on document [xwiki:Help.SupportPanel.Content]]. Click on this message for details.