hi Vincent/Fabio, *According to my knowledge partitions should not be overlap.But the XDOM model is nested. I think this might be a problem. The sample plugin I have made is also base on partitioning the entire document to non overlapping reagents so each partition can be then subjected to syntax coloring. *I tried to use the existing api(rule bale partitions) to nested syntax as well .But it turned out difficile *I need help on this. *WDUT ? Thanks -Malaka --Malaka Ekanayake CSE UOM