Please indicate a link to the complete and current documentation for the OMR product family. As an example, the docs indicate the attributes for a block element include an optional “Border type of Container element” (border), which displays a default value but no attribute usage examples or the list of possible enumerations of this value.
I tried using “border=Rounded” and “border=rounded” but neither appear to work. Without a reference in your documentation, I have no idea what the possible and correct values may be to determine if my markup is correct.