Add HTML and *roff as supporting semantic linebreaks.

[ant-222]

Not much to add to the subject:
HTML and *roff (e.g.
GNU Troff)
support semantic linebreaks,
and should be listed.

This post is written
using semantic linebreaks,
but Github fails
to render it correctly,
disregaring Markdown's concept of paragraph.

[neale-pnnl]

As a matter of fact, I learned the technique you are calling "semantic linebreaks" by reading roff documents :)

I believe the concept may have originated in roff at Bell Labs, by one of the big Unix guys. Dennis Ritchie, perhaps.

[ant-222]

Ventillated prose was known and used way before computers.

[oyvholm]

This post is written
using semantic linebreaks,
but Github fails
to render it correctly,
disregaring Markdown's concept of paragraph.

That's actually pretty neat,
it looks like poetry.
😎