An overview of the computer output microfilm field

From the earliest times, man has made his mark. At first his marks were made with his own fingers on walls of caves. He used a chisel or brush to create pictures of animals. He developed symbols, alphabet and languages. Man used marks to pass information from person to person and from generation to generation. Through the ages, man recorded information to be used again and again. He recorded history, mathematics and law. These things brought order to his life. The history of civilization is the history of man's ability to communicate, record and make marks.