If you wish to have your copy of Levee as a family mode application, all you need to do is bind it. It's already set up as a family mode application- there are some small differences for input (dos lv sees ^C and treats it like an ordinary character; os2 lv never sees ^C, because it's eaten by trap handlers) and redirectability (os2 lv uses getch() - a microsoft library function; dos vi uses dos function 0x07 - "get raw character from stdin, whatever that may be") but these shouldn't be a problem.