MB2 86a: What Liquids and How Much are Needed for Mayim Achronim? (181:8-10); When is a Cup of Wine Needed For Benching? (182:1-2)
MB2 84b: Are You Required to Have Salt and Water After a Meal? (179:6); Leaving Bread on the Table Before Benching (180:1-3)
MB2 82a: How Should a Person Practically Conduct Himself When He Changes His Location During a Meal? (178:2 - cont.)
MB2 81b: The Rama Disagrees with the Mechaber on What Constitutes a Location Change Requiring a New Bracha (178:2)