3 mishnayot: When one swears off a house - going into the attic of a house may or not be included in that vow, as prohibited (a dispute between R. Meir and the sages). Also, one who swears off a bed, which may or may not include a "dargash." Plus, defining "dargash." Also, swearing off entrance to a city - which includes its environs, apparently, while the inside/outside of a house are more specific to the doorjamb.