# warn if ignored non-blank stuff after closing '>'
<Macro Foo> this stuff is ignored...
  Warning "Foo"
</Macro> this stuff is ignored as well...
Use Foo
<Macro Bla>				
  Warning "Bla"
</Macro>			
Use Bla
<Macro Comments> # comments are fine
  Warning "Comments"
</Macro> # comments are fine
Use Comments
Error "done on line 14."