I am trying to implement a schema for a block-structured matrix. The simplified version might look like this:

<matrix numberOfRows="1 0" numberOfCols="2 0"> <blocks numberOfBlocks= "4"> <colOffsets numberOfEl="2"> <el> 0 </el> <el> 12 </el> </colOffsets> <rowOffsets numberOfEl="2"> <el> 0 </el> <el> 6 </el> </rowOffsets>...