By-laws are the products of the legislative (law-making) authority of a municipality and may be described as local command-and-control regulatory instruments.
Byelaws are local laws made by a local council under an enabling power contained in a public general act or a local act requiring something to be done – or not done – in a specified area. They are accompanied by some sanction or penalty for their non-observance.
Bylaws are a concise statement of purpose and organizational structure within which a Friends group functions.
Bylaws generally define things like the group's official name, purpose, requirements for membership, officers' titles and responsibilities, how offices are to be assigned, how meetings should be conducted, and how often meetings will be held.
Common bylaws include vehicle parking and stopping regulations, animal control, licensing, noise, business regulation, and management of public recreation areas.