else if (you.where_are_you == BRANCH_MAIN_DUNGEON
             && you.level_type == LEVEL_DUNGEON
             && mons_level(monster->type) >= you.your_level + _ood_limit()
             && mons_level(monster->type) < 99
             && !(monster->type >= MONS_EARTH_ELEMENTAL
                  && monster->type <= MONS_AIR_ELEMENTAL)
             && !mons_class_flag( monster->type, M_NO_EXP_GAIN ))
    {
        interesting = true;
    }
    else if ((you.level_type == LEVEL_DUNGEON ||
              you.level_type == LEVEL_ABYSS)
             && mons_rarity(monster->type) <= Options.rare_interesting
             && mons_rarity(monster->type) > 0)
    {
        interesting = true;
    }

    else if (you.where_are_you == BRANCH_MAIN_DUNGEON
             && you.level_type == LEVEL_DUNGEON
             && mons_level(monster->type) >= you.your_level + _ood_limit()
             && mons_level(monster->type) < 99
             && !(monster->type >= MONS_EARTH_ELEMENTAL
                  && monster->type <= MONS_AIR_ELEMENTAL)
             && !mons_class_flag( monster->type, M_NO_EXP_GAIN ))
    {
        interesting = true;
    }

    rare_interesting       = 9;

    else if (key == "ood_interesting")
    {
        ood_interesting = atoi( field.c_str() );
    }

    INT_OPTION(ood_interesting, 0, 500);
    INT_OPTION(rare_interesting, 0, 99);

    int         rare_interesting; // what monster rarity is noteworthy?

rare_interesting = 9
        Monsters which are rare for the location they're in will be
        noted.  Increasing the number causes more common monsters to
        be noted, while decreasing it causes only the most rare of
        monsters to be noted; setting it to 0 will turn noting of rare
        monsters off.