The Landovision Text User Interface Project is based around older MS-DOS versions, and batch file operating systems. LV-TUI is mostly based off PURNJAY-OS which is a much more basic version of LV-TUI. I do have a download link to the original prototype of LV-TUI. This version was listed as version 1.3 and it did not have a build number. Also, this version dates back to 2020, when we were refered to as Landovision INC.