In Plone, User editable objects are content objects. Content objects have different flavours depending on their type.
- Pages (ATDocument class)
- Images (ATImage class)
- News items
There are two different subsystems to create content objects in Plone
- Archetypes (Plone 2.x and Plone 3.x)
- Dexterity (Plone 4.x and Plone 3.x)