Disclaimers vary in terms of their uniformity. Some may vary depending on the specific context and parties involved, while other types of disclaimers may strictly adhere to a uniform and established set of formalities that are rarely or never modified, except under official authority. Some of these formal disclaimers are required pursuant to industry qualification for protection under a safe harbour and other situations where the exact wording of a particular clause or document may be dispositive in the event of a legal dispute.