This example is a plain-text cheatsheet listing sed commands for file spacing, numbering, and text conversion or substitution. It shows the exact command-line syntax for each operation, such as `sed G` for double spacing and `sed 's/foo/bar/g'` for global replacement. The source is a gist by AbsarF, and the rendering approach is static text formatting with no interactive or programmatic visualization. It relies solely on shell and sed syntax, not on any JavaScript libraries or data APIs.