Looks like it heavily inspired by medium.com editor.
Off topic: Does anyone knows if there is comment system like medium have (individual comments for each paragraph)?
Off topic: Does anyone knows if there is comment system like medium have (individual comments for each paragraph)?
It kind of reminds me of the commenting system that was used for the GPLv3 draft: http://gplv3.fsf.org/comments/gplv3-draft-2.html , for which the source code is here: https://gitorious.org/stet
The use case I am thinking about is crowdsourcing typo corrections --- while reading some text you see a type, click click and you submit a typo-fix to the author. Such a tool would vastly improve the quality of English out there on the interwebs.