The content displayer has the following responsabilities, all described in detail in [cid52]:
Use the specified filters to sort content for a neuron into aspects, and present the result of this sorting to the user.
Present content according to the user choice.
If the content is another concept map, allow the "contextification" of this map, meaning that the map is "sucked in" into the browser to allow it to be browsed (and edited, of course).