App/content type
From mx Help Wiki
Content types
Content types are used in combination with templates, they act as major headings. For instance you might have "Etymology", "Diagnosis", "Remarks", etc. content types and a "Description" template which groups them. They can also be informal working notes sections, or any other category of text that you want to record for an OTU. They can be used in as many different templates as you want.
