• cspice.zip is the Toolkit download package, containing all Toolkit components in a single compressed file.
• README is the text file providing instructions.
• dscriptn.txt documents the structure and contents of the Toolkit. (This document is also included in the Toolkit download package.)
• whats.new summarizes the additions and changes in each new version of the Toolkit. (This document is also included in the download package.)

The Toolkit license and other important considerations are contained within these rules.