Filename Extensions

Ever wondered how Windows knows which program to open for a particular data file? If you double-click on a file in Windows Explorer (or, indeed, on the name of an email attachment or any other hyperlinked file), Windows will open the program that is normally used to open that file. That program will then open …
Continue reading Filename Extensions

Which program opens a file?

If you double-click on a data file in Windows Explorer (eg a picture file or document), then Windows will open the program that it thinks “controls” that type of file, and then open the data file (document) in the newly opened program. Sometimes, you may prefer a different program to open a particular type of …
Continue reading Which program opens a file?