I've become very familiar with sections 5.012 and 5.013 of the Amherst Zoning Bylaws-- they're the sections that say whether or not you're allowed to use part of your home as a business.
Section 5.012 says that if you're upper-class (doctor, dentist, optician, member of the clergy, lawyer, architect, engineer, etc) you can, as long as you follow three rules.
Section 5.013 says that if you're working-class (a resident artist, craftsperson, beautician, dressmaker, milliner, photographer, cabinetmaker, skate sharpener, radio repair technician, etc-- yes, 'skate sharpener', I copied that list directly from the bylaws), you need to apply for a special permit from the Zoning Board of Appeals. And as long as you follow the eight rules in the zoning article, and go through the special permit process (which takes three months and costs $175), you can go about your business.
Does that seem unfair to anybody besides me?
Here's my suggested rewrite of that section of the zoning bylaws, lifted from the Keene, New Hampshire city code:
That seems fair-- do business from your home, just don't bother your neighbors, whether you're a doctor or a radio repair technician...