The sys file extension was developed by Microsoft. Most files that end with sys are system data files and are not meant to be viewed by the users.
system file
There is only one file that the name ends with GIF. The only file that ends with GIF is saving a picture.
an image file
picture file.
picture file.
Sys files are files which are used by your OS, sometimes by system application.
Images.
hfhf
A Graphics Interchange Format file is a picture format file.
No
What kind of page? if it is an Internet page, see the other question i answered about Internet page extensions. however im assuming you mean the page file that uses windows virtual memory, in which case it is .sys
If you have to ask this question, it's not something you should try. Modifying this file is not a task for those who don't know what they are doing.