Entities are the constituent of the form configuration.

Each entity can represent an input field, a title, a sub-title or a list of other entities.

As list of other entities is used to represent some grouping. For example to add a border around certain number of input field that are somehow related.

There are 8 types of entity:

1. R10.Form.entity.field
2. R10.Form.entity.normal
3. R10.Form.entity.wrappable 
4. R10.Form.entity.withBorder
5. R10.Form.entity.withTabs
6. R10.Form.entity.multi
7. R10.Form.entity.title
8. R10.Form.entity.subTitle