This OS is intended for use as a single login device, and has disabled several processes that could interfere with the RT kernel tasks.
The desktop only requires you configure the settings INI files for you specific machine, and includes simple build scripts to load configurable open Arduino firmwares.
This system boots from a RAM drive overlay of a Read-Only OS. This means any updates or changes to the OS will revert on reboot. However, any changes made to the user desktop will persist after a reboot. This "RO" mode can be disabled, and a user click-able helper terminal program in "/home/pi/APPS" automates switching the system into rewritable mode (needs a reboot). When the "RW" writable mode is active, one can make changes to user passwords or apt update to make permanent changes that persist even after a reboot back into "RO" mode.
F2FS /home was added as it naturally helps wear-level across low-end flash sdcards. Although f2fs has similar read performance to ext4, its ability to defer deletion operations can improve write speeds for most use cases. Additionally, studies have shown it can extend the flash life by 70% or more, and sdcards with larger unused free disk areas will likely improve longevity of the flash even further.