To make and install this program :

run:
./configure
make
make install (as root)

The global configuration files are placed in /usr/local/share/bbtools.
If you want a  personal configuration copy the file bbtools.rc to
~/.bbtools.rc or if the file already exists, edit the file, append:
bbtools.sloadtool.styleFile: <style-filename>
Copy the file bbsload.style to <style-filename> and edit the file,
all possible options are explained in this file.

More documentation can be found in data/README.bbsload or 
/usr/local/share/bbtools/README.bbsload.

The mailtool.position is given as +x+y or -x-y (or combination) 
where -x-y is the (x,y) distance of the right bottom of screen 
to the right bottom of bbsload.

So position -0-0 puts the application in the lower right conner of the
screen.

See bbsload -h for command-line options.