Prepress Proofs
Prepress proofs shall be submitted with original copy. Corrections are to be made on "master set," (blueline or Xerox) returned marked "O.K." or "O.K. with corrections," and signed by customer. If revised proofs are desired, request must be made when proofs are returned. UL cannot be held responsible for errors under any or all of the following conditions: if the work is printed per customer's O.K.; if changes are communicated verbally; if the customer has not ordered proofs; if customer has failed to return proofs with indication of changes; or if the customer has instructed UL to proceed without submission of proofs.