my $out_dir = OUT_DIR;
my $out_fs  = OUT_FIELDSEP;
my $out_fn  = OUT_FILENAME;
my $out_sx  = OUT_SUFXSTOR;
my $valmin  = VAL_MIN;
my $valmax  = VAL_MAX;

print <<USAGE;

This program does this and that with the $out_dir. The filename is
$out_fn and the file suffix is $out_sx.

Fields are separated with the $out_fs character. Enter a value
between $valmin and $valmax.

USAGE