The document lists various internal and external commands that can be used in Windows, such as commands to create, delete and navigate folders (md, rd, cd), delete files (del), copy files (xcopy), check disks (chkdsk), format disks (format), redirect output (_>, _>>), shut down or restart (shutdown, restart), set environment variables (set), edit files (edit), find text (find), view files (type), and more. It also provides contact information for questions.