A file with .cf2 extension is a CAD file format that contains 3D package designs or other model data for die-cutting. Most of the CAD/CAM machines can process and cut these files. It was created by the National Space Science Data Center (NSSDC) to provide self-describing data storage and manipulation format that matches the structure of scientific data and applications such as statistical and numerical methods, visualization, and management.
Text files created with Markdown language dialects is saved with .MD or .MARKDOWN file extension. MD files are saved in plain text format that uses Markdown language which also includes inline text symbols, defining how a text can be formatted such as indentations, table formatting, fonts, and headers. MD files can be converted to HTML with a program called Markdown. Markdown language is released by John Gruber.
You can also convert CF2 into many other file formats. Please see the complete list below.