Lesson 9: Regarding the download of hardhat-shorthand but encountering an issue when running hh compile, where an HTML pops up instead of executing the intended command.

[DylanJinx]

This issue arises due to the presence of an hh.exe file on Windows.
hh.exe is a part of the Microsoft Windows operating system, used for displaying compiled HTML help files (CHM files). It's a safe and important system component that should not be deleted or renamed. This file is typically located in the C:\Windows directory.
The attempted use of hh command from hardhat-shorthand conflicts with this system component, which likely caused the encountered issue. When typing hh in the command line, the system is actually calling hh.exe instead of hardhat-shorthand.
In the environment variables, it's necessary to place C:\Windows after the path to hh from hardhat-shorthand, so that hardhat-shorthand is found first.
Search for hardhat-shorthand and its path in the output by running: npm list -g --depth=0.
In my case, the output is: G:\Program Files\nodejs\node_global.

Additionally, after downloading with yarn, using hh results in an error: file not found.
It's necessary to download it with npm using the following command:
npm i -g hardhat-shorthand.