System variables what does path do

Changing the path within a Command Prompt window is temporary, only applying to that command window for as long as it is open.

For a permanent addition to the Path, such as I made to make FFMpeg available in all Command Prompts, you have to add it to the System Variables.

Bree be careful modifying the path in environment variables. I noticed if one of the paths already there are shadowed/highleted then what ever path you put in replaces the path that was already there.