Is it possible to place content types within other content types?

Not sure if this is covered elsewhere or has been asked and answered:

I’d like insert, for example, an accordion element inside another accordion element; a gallery within a tab, etc.–but this sort of thing seems impossible to do via drag and drop. That is, I can only drop such items onto the basic canvas or to a layout element, never another content element.

In an effort to try to easily determine the code required so that I can code it myself, I learned that If I drop a content object onto the basic canvas, then toggle the editor from the Advanced Layout Editor to Default Editor, I am left with an empty post — so I can’t see (easily anyway) how I might go about it. I thought there might be a list of short codes published somewhere, but your documentation page (http://kriesi.at/documentation/enfold) merely alludes to shortcuts–that is, there does not seem to be a list of them that can be referred to at once. And maybe using shortcuts wouldn’t work anyway.

Is what I’d like to do possible without having to go to too much trouble?

–Chris