(idiomatic) Examine carefully and thoroughly.

Alternative form of three-revert rule

(Wikimedia jargon) On the English Wikipedia, a rule that states that an editor must not perform more than three reverts on a single page—whether involving the same or different material—within a 24-hour period.

To rule with stern severity.

(law) A legal principle that holds an original copy of a document as superior evidence.

plural of white coat rule

(advertising) A rule prohibiting the use of actors dressed as medical professionals to give a misleading impression of the medical benefits of a product being advertised.

A rule, applied to some controversial debates and discussion panels, stating that anybody who attends is free to use information from the discussion, but cannot reveal who made any comment.

(software engineering) A humorous aphorism stating that the first 90% of the code accounts for the first 90% of the development time, and the remaining 10% of the code accounts for the other 90% of the development time.

(US, often used attributively) One of two classes of cities in the U.S. state of Kentucky, with cities under this class practicing home rule.