What type of line is an aligning mark on a print used for large drawings?

The aligning mark on a print used for large drawings is referred to as a match line. Match lines are essential in architectural and engineering drawings, particularly for large projects that need to be represented in sections or multiple sheets. These lines help ensure that the different sections of a drawing align correctly when they are placed next to each other. They provide a visual cue for the construction process and make it easier for workers to accurately assemble parts of the structure or adhere to the design specifications presented in the drawings.

A reference line typically serves to designate specific measurements or locations on a drawing but does not specifically denote how to align different sheets. A cut line indicates where a section is to be cut through a drawing to expose internal details, while a center line is used to indicate the middle of an object for symmetry or location purposes. While each of these lines has its unique function, match lines are specifically used for aligning various sections of large drawings, making that answer the most accurate in this context.