Final answer:
In PowerShell scripts, comment lines are colored green and serve to explain the commands that follow them. They begin with the # character and help in understanding the script's functions.
Step-by-step explanation:
In a PowerShell script, the comment lines are typically colored green and are meant to explain or document what the command below the comment is doing.
Comments in PowerShell are created by starting a line with the # character. Everything following this character on the same line is considered a comment and is not executed as code.
Comments are useful for describing the purpose of commands, providing instructions, or explaining the logic within a script to anyone reading the code, including the person who wrote it for future reference.