Well it took some digging to find out that winhttrack.ini syntax doesn't have
anything to do with httrackrc syntax.. and that the httrackrc options are not
the full name in parentheses but the full name without the -- which seems to
be for command line only.

Now proceeding with httrackrc as
set path "./XXX"
set mirror on
set httpproxy-ftp off
set depth 3
set ext-depth 0
for example. Just an example of the syntax if anyone else searches for this,
it took some time to find out what is the proper syntax and configuration.