[rjsw]

I wrote a networked hypertext system in 1985 but it used a binary "page" format to save bandwidth. The GUI used was GEM.

Another road not taken could have been to define a rich text format in ASN.1 and build a browser on top of the OSI network stack.

[ngcc_hk]

Phd needed to understand Asn.1 and … osi network stack. Good luck.

[rjsw]

Not really any conceptual difference between ASN.1 and something like Cap'n Proto.