Files that contain the .pas file extension are most commonly associated with the Pascal programming language. The Pascal language is a procedural programming language that was published in 1970. It has been influential in the development of many other programming languages seen today.
The PAS files that are associated with Pascal contain the source codes for a program that has been written in the Pascal language. These PAS files can be compiled to create an executable program.
Borland Delphi is one of the most known programming environments using the Pascal programming language. There are free IDEs available like FreePascal, although they have their own limitations.
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