The last line of
https://wiki.obarun.org/doku.php?id=installer-expert-options
says:
" Pretty self explanatory, and some of the variables set here may also
need to be set in 66.conf 66.conf (see Option 8) is stored in
/etc/66/66.conf "

File /etc/66/66.conf does not exit with my Obarun installation

I also suppose thet the web page
https://wiki.obarun.org/doku.php?id=66.conf
is obsolete.