what is crop mark ?

[thomas lee]

 

[JoAnn Paules]

http://lmgtfy.com/?q=what+is+a+crop+mark

 

[grammatim]

They want you to think it's aliens leaving trails in your fields, but
it's actually just high school boys or frat boys pulling a prank
overnight.

 

[Tom [Pepper] Willett]

Better question: What is Google?

: