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What is the .FAS File Extension?

.FAS File Extension Description:

The file extension .fas is extensively utilized by the computer algebra system Macsyma, which was originally designed as a component of the Project MAC at the MIT prior to its commercial launch. The .fas file extension represents the compiled program generated with the application, which is known as the first extensive symbolic mathematical system, including as one of the earliest known knowledge based systems. The file extension .fas supported concepts were later used as the basic foundation for other systems like the Maple and the Mathematica, which expounded on the program's feature sets.

The front end functionalities attributed with the file extension .fas incorporated the polynomial arithmetic as well as the expression displays, which another developer tackled the indefinite integration and the simplifier. There were various contributors to the core mathematics implemented with the .fas file extension supported program, which allowed the expansion of its functionalities into special functions like limits, number theory, power series, functional equations, sign queries, definite summation, and algebraic integration among others.

Maclisp was used for the coding of the Macsyma, and for particular instances implemented key motivator to assist in improving the Lisp dialect for the .fas file extension in areas concerning language design, efficient compilation, and numerical computation. The .fas file extension supported Macsyma, was considered as one of the largest Lisp based applications at the time.

The file extension .fas likewise represented the fast load auto lisp functionality of AutoCAD, which is considered as a dialect of the Lisp language and an extension of the AutoCAD language. The benefits of the file extension .fas can be found in its inherent abilities to aid in the operators of AutoCAD in its usage, in relation to the preparation of vector graphics in the area of Blue Prints.

The .fas file extension is part of the internal accessories that are part of the constant refinements in the steady improvement transitions of the AutoCAD application. AutoLISP is a scripting language used with AutoCAD based on early xlisp resources.

Author: MIT, Autodesk, Inc.
Author URL:,
Related Applications: Macsyma, AutoCAD
Common Path: C:/


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Do you have errors with .FAS files?

The Standard Reason for .FAS files Errors to Occur:

.FAS files errors are potential serious Windows file system errors and can be brought on by a corrupted registry that should be rectified immediately to avoid further corruption in other applications and/or devices. Dangers include system device damage, blue screen errors and fatal program crashes.

Symptoms of .FAS files Errors:

.FAS files errors produce numerous symptoms, including but not limited to: system locks on start up or shut down, applications freeze up, reduced system performance, case speaker beeping, problems saving documents, sluggish behaviour and failure while installing applications.

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What is the .FAS File Extension?    |    How to Fix .FAS File Extension Errors    |    Repair .FAS File Errors