Library programs and services are proudly offered and used by over 2,380 librarians, cataloguers, referencers, and staff who access the database of authorized subject headings or main entries that have been fully reviewed, updated, and modified to a total that exceeds 107,000 terms.

LEMB Digit @ l is an electronic tool that streamlines the processes of cataloging and classifying documentary material and incorporates a modern search system for terms accepted as authority.

The List of Subject Headings for Libraries that LEMB Digit @ l manages, constitutes a standardized language that covers all areas of knowledge, made up of universally accepted principles that allow controlled vocabulary to analyze and retrieve information. Thus, the main purpose of this list is to establish standard subject headings, which can become a reliable tool for the cataloging of materials, the conformation and construction of authority modules in MARC format and a precise source for public catalog's access.