The Internet Component Download mechanism utilizes both the Open Software Description (OSD) and Microsoft® Internet Component Download (MSICD) elements, which are contained in this reference section.
The OSD reference contains all the elements that are defined by the Osd.dtd file. These elements can be used in OSD and Channel Definition Format (CDF) files to describe software.
The MSICD reference contains all the elements defined by the Msicd.dtd file. These elements are used to describe distribution units in OSD files.