What is a fwp file and how do I open a fwp file?

A Microsoft Expression Web package file is a compressed archive integrated with encoding and compression specifications proprietary to Microsoft, and these files are saved in the FWP format. These archive files are affixed with the .fwp extension, and the Microsoft Expression Web software can be used to create these FWP files. The Microsoft Expression Web program is classified as an application integrated with features for developing and designing Web pages, as well as integrating Web functionalities into websites authored using the Microsoft Expression Web software. This application is bundled with the Expression Studio application, and the content of these FWP files contains reference data needed by the Web server and the supported Web browser of the user to access all Web files created for the website developed using this program. This means when a user opens a file in the .fwp extension, the Microsoft Expression Web program references the data stored in the FWP file to load and display as well as provide the user with the functionalities he or she requires in the compatible Web browser.