Format and control

The pragmatics of formats ...

1. How much does the PRODUCER control? (language specification)
2. How much does the RECEIVER control? (browser degrees of freedom)
3. Underspecification of MESSAGE APPEARANCE by PRODUCER:

   Browser type

   Browser version

   Platform type: - text or graphics terminal

   - B/W or colour standard

   - PC, Mac, UNIX workstation

4. CODE standards (HTML, Java, GIF, ...)
5. CHANNEL properties: bandwidth, real time transfer and formats