Customized DTD: XML file completely red

Hi,

First of all: XML editing has become a lot better in the course of the
EAP, but there is still (at least) one big issue: I have a DocBook XML
file with an external entity definied in the DOCTYPE section:

]>
]]>

This will cause every tag to be displayed in red, and completion
won't work either. Is there a way to fix this?

Thanks,
Jens