F


 * f are cats: kitten, housecat, large cat, jaguar, lynx, panther and tiger
 * F are fungi: lichen, brown mold, yellow mold, green mold, red mold, shrieker and violet fungus
 * Press [f] to fire an object from your quiver
 * Press [F] to fight a monster in a direction, even if you cannot see the monster
 * Press meta- [ f ]  to #force a lock