To editors like this, it doesn't matter much what kind of interpretation is assigned to point #2: the TAB character in a file could be interpreted as being mod-2 columns, mod-4 columns, or mod-8 columns.
About 8, 9, 10 weeks. After about 8, 9, 10 weeks of age, or when the puppy arrives at it's new home, the dog should be taught to go potty outside. Do not have paper or potty pads inside your home. Peeing is for outside only, or you are teaching your new pup it is okay to potty inside your home.
There is a huge range when it comes to potty training. Some children learn as early as 15 months and refuse to wear (or need) diapers. Others are not potty trained until 2.5 or 3 years. Most continue to wear at least a pull-up (toddler diaper) until age 4 just in case there are accidents.