For example we have a module which should get an info about a module on other page. It should get an info about other modules based on a module definition guide or a part of the module control path. It should know about page number which a module candidate is on and the module instance id(not definition). i.e. we should select a control from dropdown and make links inside redirecting to other page (mid, pageid). Does MP has the ready methods or it's required to write own DAL?