If you were creating a newsletter for your school's marching band, why would it be useful to view the final product at 150% and then at 75% before sending it out to the members?

A school marching band may contain from 11 to over 500 students. Marching bands often practice frequently during the late summer and early fall and most often attend their school's football games, playing music in the stands, and marching a show during halftime.