The document discusses articles of association (AOA), which contain the internal rules and regulations of a company for the benefit of shareholders. AOA must be registered for certain types of companies and usually deal with matters like shareholder rights, board meetings, and resolutions. AOA can be altered by special resolution but cannot contradict the memorandum of association or companies act. The doctrine of indoor management protects outsiders dealing with companies by assuming they have constructive notice of AOA contents, with some exceptions. AOA are subordinate to the memorandum of association and govern internal company relations.