Should a court of competent jurisdiction determine that any section or sub-section of this letter agreement is unenforceable because one or all of them are vague or overly broad, the parties agree that this letter agreement may and shall be enforced to the maximum extent permitted by law. It is the intent of the parties that each section and sub-section of this letter agreement be a separate and distinct promise and that unenforceability of any one subsection shall have no effect on the enforceability of another.