Thanks for the detailed reply. We're not actually looking to commercialize so unless Atlassian want to integrate (and they have a license for the core drawing c

Thanks for the detailed reply. We're not actually looking to commercialize so unless Atlassian want to integrate (and they have a license for the core drawing component) I don't really want to set off down the charge-for route. I'll talk to Atlassian, see what they say. UML and edge loops, both very good, moved up the todo list.