Style Sheets
  - Presentation models (Style sheets) for:
- 
        - Separation of the style from the
          content/structure
- Presentation of the same document without
          modifying it
- Homogeneous presentation of documents having the
          same type
- Automatic formatting
 
  - Principles:
- 
        - Association of a value of a property with an element (or element
          type)
- Specific or generic definitions
- Context sensitivity: relative values,
        inheritance