[Paraview] SWKey: File extension for PV Readers?

[Samuel Key]

Hi,

I have an xyz.xmf file that loads just fine. By renaming the file to 
xyz.xmf3 I was able to get directly to Xdmf3 reader.

Is there a file extension that can be used to get directly to the Xdmf3 
'Top Level Partition' option?

Thanks in advance for the bother.

Samuel Key
FMA Development
1005 39th Ave NE
Great Falls, MT
USA