This document discusses Display Suite (DS), an API and modules for modifying Drupal elements and objects. DS includes modules for nodes (ND), CCK fields (ND CCK), contexts (CD), and views (VD). It allows creating build modes and customizing node layouts, fields, and regions. The document demos creating build modes, applying styles, adding fieldsets and tabs, and altering views using DS. It concludes by providing links to DS documentation and demos.