Default = tank_profile_class {
   radius      =  9;
   shelfSize   =  5;
   
   row04    =  "        xxx        ";
   row05    =  "      xxxxxxx      ";
   row06    =  "     xxxxxxxxx     ";
   row07    =  "     xxxxxxxxx     ";
   row08    =  "    xxxxxxxxxxx    ";
   row09    =  "xxxxxxxxxxxxxxxxxxx";
};


