These properties alter objects in various ways.

Help topics available:

air_supply	all_protection	author	bought	broken
burnable	canvas	clay	cloth	code
cursed	diamond	drinkable	eatable	electrically_charged
emerald	false_corpse	floatable	fragile	fur
glass	glue	holder	holy	ivory
leather	magic	magical	metals/	metal
no	no_/	obsolete	oil	onfire
paper	preserved	protection/	quest_item	real_glass
rubber	ruby	snow	special_item	stone
two_handed	un_cured	unique_item	water	weapon_can't_break
wooden