This document discusses using for loops in PowerShell. It provides an example PowerShell script that demonstrates incrementing and decrementing values using for loops. The script clears the host, then runs four for loops: one that increments by 1 from 0 to 5, one that increments by 2 from 0 to 10, one that decrements by 1 from 0 to -5, and one that decrements by 2 from 0 to -10. Each loop displays the current incremental or decremented value and a beep.