the functions are designed to work with eachother. Functions that gather information on users or computers can be piped into functions that take an action. For instance, you can pipe a function that returns computers that have not logged onto the network for 30 days into a function that disables computer accounts. In a single line of code, you can disable all the inactive computers in active directory. There are a wide variety of functions that perform other tasks like sending magic packets for wake on lan, measuring directory and sub-directory sizes, gathering large files, and other tasks. Every function is fully documented and works with the Get-Help function.