Convert 3 (Man Page) to RST

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.

The RST file extension stands for reStructuredText, a lightweight markup language widely used for technical documentation. Originally developed as part of the Docutils project in 2001, reStructuredText facilitates the creation of readable plaintext documents that can be easily converted into various output formats such as HTML, PDF, and LaTeX. Its clear syntax and straightforward conventions make it a preferred choice for documenting software projects, especially within the Python community. RST files serve a crucial role in maintaining accessible and well-structured documentation, ensuring consistency and simplicity in formatting across different platforms.