[SyncEvolution] Caldav notes, memos, tasks and todo support

Hello, here are my two questions: 1- First, what kind of different storages the Caldav RFC accepts? I was not able to retrieve this information, because lot of people seem confused between these four words: notes, memos, tasks and todo. 2- Second, SyncEvolution support two different backends for the things I understand to be the same concept, and give this description in the documentation <https://syncevolution.org/documentation/syncevolution-usage>;: * memo: plain text notes * todo: task list So what is the difference between memo and todo? ownCloud and Thunderbird Lightning seem to call "task" the todo concept, and I've never seen a "memo" implemented. Enlight me please! -- *Vincent* http://influence-pc.fr/