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Notepad++ is a free source code editor and Notepad replacement that supports several languages and is simple and easy to use. It’s a tool that lets you peer inside a file to understand its structure and is a handy way of finding out why you are getting a specific error message when dealing with a file, for example the tagging or the language combination set up for it.

While it does require a minimal understanding of coding, Notepadd++ an invaluable way of identifying exactly what is wrong with your file.

But be wary: modifying things without being sure of what you are trying to achieve can result in creating more issues.

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