/bluː ˈpɛnsəl ruːl (ˈdɒktrɪn)/ – Phrase
Definition: Quy tắc bút màu xanh (nguyên tắc).
A more thorough explanation: a rule which allows courts to remove unreasonable portions of a contract in order to make the contract enforceable
Example: North Carolina’s blue pencil rule severely limits what the court may do to alter an unenforceable clause.