When I was in grade school in the mid- to late '90s, once a week our teacher would line us up and walk us down to the computer lab. There, we would fidget in our seats, clacking away at the tactile ...

File Explorer does have a Preview pane, but it eats into the main window permanently, and it still only offers a very tiny preview. It could be much better.

The Windows system consists of thousands of files. Many of them have strange names, others have extensions that most users have never seen before. Normally you do not need to worry about these files.