Spotfire Cloud vs Desktop Authoring

I'm currently working through a Cloud trial -- and I've used the desktop version before, but this is my first experience with the cloud authoring app.

Is there a list of limitations to the cloud authoring versus the desktop applicaiton?  For example, at first glance it appears management of data sources is more robust in the desktop version, and being able to use expressions to filter or define axis'.

I don't suppose it is possible to use the desktop authoring application with a cloud subscription?

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