Convert 4 (Man Page) to 3 (Man Page)

The 4 file extension refers to Unix Section 4 Manual Pages, which document special files and device drivers. These files, such as "mouse.4", describe how devices interact with the Unix operating system and are accessed using the "man" utility. Historically, these manual pages have been a fundamental part of Unix documentation, helping users understand and manage system devices.

The 3 file extension refers to Unix Section 3 manual pages, which document library functions in Unix-based systems. These manual pages, or man pages, provide detailed information about C library functions, excluding system call wrappers. Introduced as part of the Unix documentation system, they help users understand how to use various library functions effectively. You can view these files using the "man" utility or any text editor.