What is slug in indesign?

A slug in InDesign is a non-printing area outside of the page layout that is used for storing information such as file name, project name, date, and other information that you want to appear on every page of your document. Slugs are typically used for reference purposes and are not included in the final printed document.

To add a slug in InDesign, go to File > Document Setup and enter the desired dimensions for the slug area. You can also customize the size of the slug area by clicking the "More Options" button in the Document Setup window.

The slug area will appear as a shaded area around the edges of your document in InDesign, and any content you place in the slug area will not be printed when you export or print your document.

Overall, using a slug in InDesign can be helpful for organizing and providing additional information about your document, especially for print production purposes.