Possible extensions
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8.3 - Possible extensions

In future, HTML+ may be extended to support simple drawings with embedded hypertext links. One idea would be a line drawing primitive using the SHAPE attribute. A better approach is to extend existing drawing formats such as the ANSI Computer Graphics Metafile format (CGM) or Adobe's PDF to include URL based hypertext links. This extended format could then be used for figures within HTML+ documents.

The use of the MIME multipart message format would also help to speed up the display of figures by sending image data at the same time as the HTML+ document. Another possibility would be to allow image data to be embedded in the document using an EMBED element in place of the SRC attribute. Binary data could be represented using the MIME character encoding or the more compact ASCII base 85 encoding, as used in Adobe's PDF. The drawback with this approach is the inability to use format negotiation. As a result, the EMBED element has been dropped from the current draft.

HTML+ Discussion Document - November 8, 1993

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