Summarize this article in one sentence.
You can technically write and run a program in Notepad using any coding language available, but you must save the program in the correct format for the program to run. All Notepad files save as text documents by default. The easiest way to open Notepad is by clicking Start {"smallUrl":"https:\/\/www.wikihow.com\/images\/0\/07\/Windowsstart.png","bigUrl":"\/images\/thumb\/0\/07\/Windowsstart.png\/30px-Windowsstart.png","smallWidth":460,"smallHeight":460,"bigWidth":"30","bigHeight":"30","licensing":"<div class=\"mw-parser-output\"><p>I edited this screenshot of a Windows icon.\n<\/p><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"http:\/\/en.wikipedia.org\/wiki\/Public_domain\">Public Domain<\/a><br>\n<\/p><\/div>"}, typing in notepad, and clicking the blue Notepad icon at the top of the Start window. Notepad doesn't exclude any languages, but you'll need to use the same language throughout the document to remain consistent. If you don't know any programming languages, you can try one of the examples listed in this article. As with most code editors, you'll always need to place new lines of code on a new Notepad line. Whenever you open a bracket or parenthesis (e.g., { or [), you must close it with the opposite-facing counterpart in order to complete a line of code. Failing to do so will result in errors. While you can certainly write entire programs in Notepad, it's definitely not the easiest way—Notepad doesn't contain any syntax highlighting or indentation options, making it difficult to use for writing larger pieces of code.  Notepad++ is a great free option for coding.

Summary:
Understand Notepad's limitations. Find and open Notepad. Determine your programming language. Press ↵ Enter after you complete a line of code. Close any open brackets and parentheses. Consider using a dedicated code-editing program.