Registration allows use with the guarded title, registered Engineer (Engr). An alternate Edition, Registered Engineer (R. Eng) is also used even though it is just not formally recognized by COREN. Anyone not registered as an engineer might not use any title that indicates that they're registered Engineers. It is unlawful https://line82592.tinyblogging.com/how-much-you-need-to-expect-you-ll-pay-for-a-good-engineering-74099743