Web-ex04.7z

on your computer (likely in your "Downloads" folder). Right-click the file. Hover over 7-Zip in the menu.

Often used for web programming courses (e.g., Exercise 4). web-ex04.7z

Sometimes used in building demos for specific environments like Czapski Michael's blog . 7-Zip is free software with open source. How To Use 7-Zip To Compress & Extract Files - Step By Step on your computer (likely in your "Downloads" folder)

Since Windows does not natively support the .7z format as deeply as .zip , you should install a third-party archiver: you should install a third-party archiver: