Answer:
true.
Explanation:
Introduced by John Herschel in 1842, the blueprint process is a contact print process through which a technical drawing can be reproduced. Ever since its creation, it has been mostly used for floor plans in construction and industry. The process is characterized by the printing of white lines over a blue background, hence its name. Even though this process is no longer commonly used, the name blueprint is still common to refer to floor plans.