Given the current need of the professors as .LRN users of having a tool that lets them define and set up the workflow of their courses and a synchronization and interaction between different roles of an e-learning experience, the IMS-LD package provides the support to fulfil these needs, making use of the IMS Learning Design (from now on referred as IMS-LD). We recommend to read the IMS-LD specification in order to understand better this document. If you are already familiarized with the specification, continue reading this document, otherwise you can take a quick introduction by reading our short introduction to IMS-LD)