If you meet a file with the extension .exe, .dll and so on, you cannot do that. But you can open such files as *.ini, *.config and so (text based files). Right click on the file->Open with... Locate the notepad and double click on it.
You can use Notepad for that.
You see, notepad supports all scripts, you can save a file as anything. But It cannot compile anything.....All it does is edit the text of any file.
To connect Notepad to the Command Prompt, you can open Command Prompt and type notepad followed by a filename (e.g., notepad myfile.txt). This will open Notepad with the specified file, allowing you to create or edit it. If you want to open an existing file, simply provide the path to that file. You can also use the command start notepad to open Notepad without a specific file.
A .txt can be read with notepad.
To edit an FSX (Flight Simulator X) cfg file using Notepad, first navigate to the FSX installation directory, typically found in "C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X" or a similar path. Locate the cfg file you want to edit, such as "fsx.cfg" for general settings or "Aircraft.cfg" for specific aircraft settings. Right-click on the file and select "Open with" > "Notepad." Make your desired changes, then save the file, ensuring you have backup copies in case you need to revert your changes.
Any internet browser will view them (Internet Explorer, Firefox, Safari, Google Chrome ETC.) But if you want to edit it the simplest and one of the most common ways is the program Notepad which usually come with your computer. Make sure that if you download it that it is plain Notepad not Notepad XML or anything like that.
Finale Notepad is a free program that will allow you to do this. see http://www.finalemusic.com/notepad/
To add a notepad (.txt) file to a .zip archive format, you need a certain program. I recommend using WinRAR 3.71 (rarlab.com/download.htm). Once installed, create the notepad file, and then right click on it and select "Add to Archive." You should then be able to create a .zip format archive with a notepad file inside.
Notepad files aren't something that just pop up on your system. You have to make them through the program called Notepad, which can be found at Start>All Programs>Accessories>Notepad. Once you have made the notepad document, you can save it somewhere on the computer, and then it is an editable Notepad file.
Open it in Notepad. Add or remove whatever code you want. To test, you will have to upload it to a PHP enabled webhost, or you will need to install MySQL, PHP, and Apache on your computer. Use Editor to edit the PHP file. Example: Notepad++ , editplus ,Zend IDE ,Netbeans IDE
Launching a notepad window is mostly the same on Windows 8 except that without a dock / start screen patch program, you will have to launch it via the start page. The easiest way to do this is to press the windows key then type "notepad", the only remaining tile should be the notepad executable tile. To open an existing HTML document with Notepad, you can still right click the file and click "edit" to open in Notepad.
You can use notepad to open the source code file again. Open the folder it is in. Right click on it and pick Open With and choose Notepad. If you are using Internet Explorer, you can go to the View menu and pick View Source and it will open it in Notepad. When you make your changes, save the notepad document. Don't close it in case you want to make further changes. Return to the browser and refresh the page and the changes will be updated