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- >> The client doesn't know in advance about these embedded objects, it
- >> therefore makes sense for the server to be able to append them to the
- >> requested html document so as to avoid a further network loop delay for
- >> retrieving them.
-
- > I've been through this line of thought in a hypertext/electronic book
- > project. Yes, it's more efficient to include the graphics in the HTML data
- > stream, but only if you just have one version (format) for each graphic.
-
- I wasn't suggesting including the graphics as part of the HTML data stream,
- but rather appending it as a separate object with its own distinct format, as
- appropriate to its particular type.
-
- > We found it best in the long run to provide our embedded graphics in several
- > formats, and allow the client to choose the format most appropriate for its
- > output device (e.g. 8-bit vs 24-bit colour, Postscript if the device
- > supports it, WMF if the client is running the Microsoft Windows version of
- > the viewer program, etc).
-
- This seems to be where the negotiation idea comes in. The client can tell
- the server in advance (or as part of the request) what its capabilities are.
- Given this the server can work out the most appropriate format to send.
-
- If the picture is really big, or the server has to do some time consuming
- format conversion (or perhaps ask some agent to do this on its behalf),
- then I believe that the server should quickly reply with a short message to
- that effect so that the user has some idea of what is happening and how long
- to expect to wait.
-
- By the way, you may be interested to know that in Britain, universities are
- being connected this spring to a new fiber optic network intended to allow
- academics to read electronic journals on-line with video clips, 3-D animations
- and simulations. It will be possible for distant researchers to work on the
- same data or paper simultaneously and see each other's changes.
-
- I will try to find out more.
-
-
- Best wishes,
-
- Dave Raggett
-
-