You can open .DAT files that contain text, with text editors, like Notepad, Notepad++, VS Code, etc. But it is not possible to know what contains in a DAT file.

To make Notepad files always open in a new or separate window in Windows 11, open Notepad setting and change the 'Opening files' option.

Anyone know of a way on a win98 machine that I can create an icon that will prompt the user to open a file, and then open it in notepad?I thought for sure there was a command line switch that ...

Notepad's tab support allows users to open multiple files in a single window, similar to how Microsoft implemented tabs in File Explorer in Windows 11.

I need to open up 4 text files at a time all with the same name but with different extensions. I've created a very simple batch file to take care of this using notepad, but it will only open up ...