Windows Registry Filename Extensions and The File Association

Windows makes use of file association, a system that enables efficient retrieval of programs and files. Programs are sometimes retained in the system when files are deleted, thus leaving the registry all cluttered.

File association uses file extensions to identify the programs or applications used, and there are file extensions for every corresponding application. Windows is able to identify the default program for the file retrieved through file association.
File extensions are alphabetical characters and alphanumeric placed after the period at the end of the filename. Usually, they are composed of three letters. Such pieces of information are stored in the registry for safekeeping because they are highly complicated information.

The same programs and files cram the registry. Overtime, when a lot of files are stored in the registry, it becomes cluttered and the registry may need cleaning.  It is very important to regularly check your registry and schedule a time for its cleaning. Otherwise, your computer will lag and slow down.
 
There are many registry cleaners available on the internet. As a matter of fact, some are downloadable for free. If you type in certain keywords, you will be directed to a series of results pertaining to the registry cleaner that you want. Always remember that you need to find a cleaner that is suitable for your Windows. Cleaner will work more efficiently if that is so. Registry Cleaner Reviews and here especially the Regcure Review and Registry Easy Review are providing useful information about registry cleaner! Filename extensions have been in the system for decades, but during the tie of DOS and Windows, the use of filename extensions has become even more popular.