What are triangular corner pockets used for?

Q.  What are triangular corner pockets used for?  

A.  These self-adhesive products very simply create a pocket to hold leaflets, pricelists, business cards or other documentation. on the inside covers of ring binders, books, folders, catalogues and other printed items. The smaller corner pockets are often used as photo corners to hold pictures and images in scrapbook and craft applications.

View the full range of self-adhesive pockets here.