Using Visual Studio code
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                        This book details the basics of using the Visual Studio Code Integrated Development Environment (IDE). You can download it from here: https://code.visualstudio.com/
9. Commenting out code blocks
Another useful trick is the ability to comment out a block of code. You might do this if you are experimenting and want to remove code from your program without actually deleting it.
To comment / uncomment a code block:
- Highlight the code to comment or uncomment
 - Press Ctrl - / (Control and forward slash)
 
Most IDE's colour commented code green as an extra visual cue.

VS Code can do this for any language it has hinting enabled for.