Subroutine

Perl, short for Practical Extraction and Reporting Language, is a high-level, general-purpose programming language created by Larry Wall in 1987. It is primarily used for text processing, system administration, web development, network programming, and bioinformatics. Developers can access Perl by downloading it from the official Perl website at Perl Downloads, which provides binaries, source code, documentation, and modules for Windows, macOS, and Linux platforms.

WATFIV, short for Waterloo Fortran IV, is a dialect of the Fortran programming language developed at the University of Waterloo to provide a fast, user-friendly, and educational version of Fortran IV for scientific, engineering, and numerical computing. It was primarily used in academic settings for teaching programming and numerical methods. Developers could install WATFIV on mainframe systems and later on minicomputers and personal computers through university distributions and official compilers provided by the University of Waterloo archives.

Fortran, short for Formula Translation, is one of the earliest high-level programming languages, originally developed in the 1950s for scientific and engineering computations. It is designed for numeric computation, array processing, and high-performance computing, particularly in domains such as physics simulations, climate modeling, computational fluid dynamics, and large-scale engineering applications.