The configuration parameters are:
set DATFILE /path/filename.dat; # Keeps track of nbrs of visitors
# NB! $DATFILE must be writeable and have
# the same owner as the httpd process,
# or it has to be world writeable
set FIELDS 6; # Number of digits
set DIGITPATH /path/digits; # Path to the catalog with the digit images
# NB! without a trailing /
set TRANSPARENT 0; # Transparent background. 1 = yes, 0 = no
set ndW 10; # new_digit_Width (width in pixels per digit)
set ndH 15; # new_digit_Heigth (heigth in pixels per digit)