The Layout Library stores dimensions and specifications of common layouts used by the Standard Drawing and Booklets/Lots dialogs. These layouts contain information about the length, width, grippers, borders, number of pages, signatures, etc. It also allows you to attach a graphic from the Graphic Library.

The Layout Library is different from an Estimate Template because it only stores information specifically regarding the setup and dimension of a sheet or sheets and no information about quantity, ink color, pre-press, bindery, etc.

The Estimate Template is a more complete template of an estimate including every piece of information about that estimate. The Layout can only include the necessary information to correctly layout and draw the estimate setup.