In April 2005, Tridgell tried to produce free software ( now known as SourcePuller ) that interoperated with the BitKeeper source code repository.

" Apple reportedly obtained an eight-year license for Applesoft BASIC from Microsoft for a flat fee of $ 21, 000, renewing it in 1985 through an arrangement that gave Microsoft the rights and source code for Apple's Macintosh version of BASIC.

In developing AIX, IBM and Interactive Systems Corporation ( whom IBM contracted ) also incorporated source code from 4. 2 and 4. 3 BSD UNIX.

In 2003, the SCO Group alleged that ( among other infractions ) IBM had misappropriated licensed source code from UNIX System V Release 4 for incorporation into AIX ; SCO subsequently withdrew IBM's license to develop and distribute AIX.

The source code for 13 games, as well as the OS and development tools ( for the Atari ST computer system ) were discovered in a dumpster behind the Atari building in Sunnyvale, California.

Commented assembly language source code was made available for Centipede, Commando, Crossbow, Desert Falcon, Dig Dug, Food Fight, Galaga, Hat Trick, Joust, Ms. Pac-Man, Super Stunt Cycle, Robotron: 2084 and Xevious game titles.

New tools, documentation, source code and utilities for development have since been created which has sponsored additional homebrew development.

The source code to AMOS has since been released under a BSD style license by Clickteam-a company that includes the original programmer.

Some popular freeware BBS programs for MS-DOS included Telegard BBS and Renegade BBS, which both had early origins from leaked WWIV BBS source code.

How to design and implement a stripped-down version of an interpreter for the BASIC language was covered in articles by Allison in the first three quarterly issues of the People's Computer Company newsletter published in 1975 and implementations with source code published in Dr. Dobb's Journal of Tiny BASIC Calisthenics & Orthodontia: Running Light without Overbyte.

As the popularity of BASIC grew in this period, magazines ( such as Creative Computing in the US ) published complete source code in BASIC for games, utilities, and other programs.

BCPL was the first brace programming language, and the braces survived the syntactical changes and have become a common means of denoting program source code statements.

The enhanced assembler's source program was then assembled by its predecessor's executable ( A1 ) into binary or decimal code to give A2, and the cycle repeated ( now with those enhancements available ), until the entire instruction set was coded, branch addresses were automatically calculated, and other conveniences ( such as conditional assembly, macros, optimisations, etc.

* Code browser, for navigating source code

Source compatibility requires recompilation but no changes to the source code.

The product ships with complete source code, build script, test suite, and documentation.

The code quality and general utility along with the licensing terms have led to its use in a multitude of free and open source software.

* Source Navigator and Source Navigator NG-A source code analysis and exploration tool

This license is a 2-clause BSD license with an additional copyleft clause similar to the GNU GPL version 2's Section 3, requiring source code of an application using Berkeley DB to be made available for a nominal fee.

In 1996 Taito announced that they lost the original source code.

The same program in its human-readable source code form, enables a programmer to study and develop the algorithm.

Computer programming in general is the process of writing, testing, debugging, and maintaining the source code and documentation of computer programs.

This source code is written in a programming language, which is an artificial language often more restrictive or demanding than natural languages, but easily translated by the computer.

The process of writing high quality source code requires knowledge of both the application's domain and the computer science domain.

In information theory and computer science, a code is usually considered as an algorithm which uniquely represents symbols from some source alphabet, by encoded strings, which may be in some other target alphabet.

The last major game to make use of the Duke Nukem 3D source code was TNT Team's WWII GI in 1999.

About a month after the release of the Duke Nukem 3D source code, Blood project manager Matt Saettler released the source code for both EDuke v2. 0 and EDuke v2. 1, the test version of what would have eventually become the next EDuke release, under the GPL.

So for instance he was called rex sive dux (" King or Duke ") by one source ; Pope John XXII, in a letter to the King of France, refers to Gediminas as " the one who calls himself rex ".

– 1015 ), some source state that she was a wife of the Duke Laszlo ( Vladislav ) " the Bald " of Arpadians

Catherine was still young and marriageable, a source of concern to the Lord Protector of England, the king's uncle, Humphrey, Duke of Gloucester.

In the words of her grandson, Edward VIII ( later the Duke of Windsor ), " Her generosity was a source of embarrassment to her financial advisers.

The battle is said by some to be the source for the mnemonic for remembering the traditional colours of the rainbow, Richard of York Gave Battle In Vain, and also the mocking nursery rhyme, The Grand Old Duke of York although this much more likely refers to the eighteenth century duke, son of George III.

The Sovereign is considered the fount of honour, and as " the fountain and source of all dignities cannot hold a dignity from himself ", cannot hold a peerage ( although the British Sovereign uses the style " Duke of Lancaster ").

The Duke of Cornwall holds both the dukedom ( title ) and Duchy ( estate holdings ), the latter being the source of his personal income ; whilst the Duke takes his Sovereign rights from Cornwall, those living in his estates are currently subjects of the British Sovereign.

John de la Pole was Duke of Suffolk and John Howard was Duke of Norfolk ( 2nd creation ), while the duchy of Cornwall was reserved as a title and source of income for the eldest son of the sovereign, and the duchy of Lancaster was now held by the monarch.

During the events of the original novel Dune, Shaddam grants Duke Leto Atreides temporary control of the harsh desert planet Arrakis, the only known source of the all-important spice.

The Bureau's source ( Duke Carl Alexander of Württemberg, a distant relative of Queen Mary then living as a monk in the United States ) claimed that Simpson and Ribbentrop had a relationship, and that Ribbentrop sent her 17 carnations every day, one for each occasion they had slept together.

This constant threat of interference and intrusion into his domestic affairs was a source of concern for Victor Amadeus, and from 1687 the Duke ’ s policy became increasingly anti-French as he searched for a chance to assert his aspirations and concerns.

The Gesta Guillelmi is the earliest extended biography of any Duke of Normandy, and is undoubtedly an invaluable source for the events surrounding the Battle of Hastings in 1066, as well as the battle itself.

Shortly after the Duke Nukem 3D source code was released, Silverman added the Polymost renderer to the Build engine.

John of Gaunt, younger brother of Prince Edward, had become the 1st Duke of Lancaster and thus the source of the House of Lancaster's claim to the throne.

Unfortunately, it was sent just after the release of the Build source and hence Duke Nukem 3D was stuck with the build libraries that 3D Realms had used in the original Duke.

With the 2. 1 private betas, Saettler worked towards integrating Silverman's build source into the Duke source code, but the project fizzled out before producing anything more than some very buggy private betas.

On April 1, 2003, after several years of claims to the contrary, 3D Realms released the source code to Duke Nukem 3D.