So there's this project, an operating system and standard called TRON.
It's developed by Dr. Ken Sakamura, at UTokyo.
It's an acronym: "The Realtime Operating-system Nucleus" - and this perfectly describes the way TRON is built, but there's more to it.
For one, it's not just one single operating system kernel here.
TRON encompasses a body of standards that define its frameworks.
These standards include BTRON, ITRON, µITRON and its encoding, a non-Unicode method of interchange for characters, such as CJK, Latin, Cyrillic and Arabic, among other sets.
They are stewarded by the T-Engine Forum, a non-profit group.
This group consists of 266 members in total, including such names as Fujitsu, NEC, ARM, Freescale and MIPS.
It is quite obscure; not much is known about it in the western world, however, it is a widely used and installed embedded system.
The majority of its documentation is in Japanese, as well as its source code comments and research; bring a translator.
Foone had made a thread, mainly because it has a funky new keyboard. https://mobile.twitter.com/Foone/status/1010575047390449665 has some pics of the TRON UI.
https://uribo.sourceforge.net/doc/index.html has an open-source version.
I heard that it had been an inspiration for some things in Haiku.