I have some common macro and element definitions which I would like to
import into different ODD files (with different schemaSpecs).
Right now I have tried these possibilities:
1. copy & paste ;-)
2a. xincluding every macroSpec separately
2b. xincluding a specGrp with the macroSpecs
3. modulerefing a relaxNG file with the appropriate definitions
Are there any more/better and what is the preferred way?