I have been trying to create normalized DITA outputs using DITA-OT and the command "dita --input=sample concept.dita --format=dita", but I keep finding that the output files contain a "specializations" attribute which is not defined in the DITA schema prior to dita 2.0, and fails validation on every tool I try to use with it.
Is there a way to tell DITA-OT to target a specific DITA version when producing normalized dita? I have not been able to find a way to specify this in the DITA-OT documentation.
Is the "specializations" attribute meant to be valid DITA prior to 2.0?
I've attached a simplified example to show the behavior. It is repeatable on versions of DITA-OT going back to 3.5.0
The normalized version, which should be valid dita, is not accepted as valid dita by even DITA-OT itself.
I am confused as to whether this represents a bug, or if I am misunderstanding something about the goals of normalized dita.
If anyone has any insights to provide, I would be much obliged.