Short Essay

Adding Essay content type to course presentation

Hi. In course presentation, you have several elements that are not explained anywhere on your website. For example, I don't know how to use Edit Continuous Text or Exportable Text Area, despite spending a good bit of time searching site for explanation.So, I'd like to request that those elements have some explanation somewhere on the website. 

In addition,Could you please add the essay content type to the Course Presentation?