Often, files that are distributed over the Internet are provided with a checksum number for security and file validity. While they are not needed, some people may wish to verify their downloads with ...

Mac OS X computers use a default application to open every file type based on its file extension. If you don't want to use the default application when opening a file, you can select "Open With" from ...

BearPup sometimes wants to open a file in one program, and other times open it in another. He asked the Answer Line forum for an easy way to do this. Windows uses a file’s extension–the part of the ...