The document discusses various types of software used in architectural and structural design. It covers architectural software such as AutoCAD, Revit, Rhino, ArchiCAD, SketchUp, Canvas, and Lumion. It also discusses structural software such as STAAD Pro, ETABS, SAP2000, and ANSYS. The document then focuses on describing AutoCAD in more detail, covering its features, advantages, disadvantages, commands, and how to use layers and hatches.