Question: What is the full meaning of the graphic editor used in creating Propaganda?

Context paragraphs:
Propaganda (desktop backgrounds): PROPAGANDA is a large collection of GPL-licensed seamless desktop backgrounds included in various Linux distributions, and available via free download over the web.  While no longer being produced or even officially hosted online, the collection consisted of approximately 15 volumes of largely abstract and surreal art, numbering over 1,000 images in total.  Created in GIMP by Bowie J. Poag, the images were meant to attract users to the platform by virtue of the art having been 100% Linux-generated.

Continuous Function Chart: A WCFC (Continuous Function Chart) is a graphic editor that can be used in conjunction with the STEP 7 software package.  It is used to create the entire software structure of the CPU from ready-made blocks.  When working with the editor, you place blocks on function charts, assign parameters to them, and interconnect them.

Leopoldo Méndez: Leopoldo Méndez (June 30, 1902 – February 8, 1969) was one of Mexico’s most important graphic artists and one of country’s the most important artists from the 20th century.  Méndez’s work mostly focused on engraving for illustrations and other print work generally connected to his political and social activism.  His most influential work was connected to organizations such as the Liga de Escritores y Artistas Revolucionarios and the Taller de Gráfica Popular creating propaganda related to the ideals of the Mexican Revolution and against the rise of Fascism in the 1930s.  Despite his importance in 20th-century artistic and political circles, Méndez was a relatively obscure figure during his life, and remains so afterwards.  The reasons for this generally relate to the fact that he believed in working collaboratively and anonymously for the good of society rather than for monetary gain and because the socialist and communist themes of his work fell out of favor with later generations.  Despite this, he has received some posthumous recognition with Mexican scholarship considering him to be the successor to graphics artist José Guadalupe Posada.

Pixelmator: Pixelmator is a graphic editor developed for macOS by Lithuanian brothers Saulius and Aidas Dailide, and built upon a combination of open source and macOS technologies.  Pixelmator features selection, painting, retouching, navigation, and color correction tools; as well as layers-based image editing, GPU-powered image processing, color management, automation, and a transparent head-up display user interface for work with images.  Pixelmator uses Core Image and OpenGL technologies that use the Mac's video card for image processing.

VRR (program): VRR (a Vector-based gRaphic editoR) is a free and open source vector graphics editor application designed especially for creating illustrations of mathematical articles.

Acorn (software): Acorn is a raster graphic editor for macOS developed by August Mueller of Flying Meat Inc, based out of Mukilteo, Washington, United States.  Acorn was first released on September 10, 2007 and was built upon the framework of a previous image editing application of Flying Meat Inc., FlySketch.

GIMP: GIMP ( ) (GNU Image Manipulation Program) is a free and open-source raster graphics editor used for image retouching and editing, free-form drawing, converting between different image formats, and more specialized tasks.

Roger Manvell: Arnold Roger Manvell (10 October 1909 – 30 November 1987) was the first director of the British Film Academy (a post he filled for over a decade), author of many books on films and film-making, and authored and co-authored (with Heinrich Fraenkel) many books on Nazi Germany, including biographies of Adolf Hitler, Rudolf Hess, Heinrich Himmler, Joseph Goebbels and Hermann Göring.  During World War II he worked in the Ministry of Information, creating propaganda films for the British government.  In his career, he also lectured in universities in as many as forty countries in three continents (America, Europe and the Middle East), and made a name as a broadcaster and screenwriter.  He joined the Boston University faculty in 1975 teaching film history classes at the College of Communications.  Manvell was named University Professor in 1982.

Sehnsucht: Sehnsucht (] ) is a German noun translated as "longing", "pining", "yearning", or "craving", or in a wider sense a type of "intensely missing".  However, "Sehnsucht" is difficult to translate adequately and describes a deep emotional state.  Its meaning is somewhat similar to the Portuguese word "saudade", or the Romanian word "dor".  Sehnsucht is a compound word, originating from an ardent longing or yearning ("das Sehnen") and a long or lingering illness ("das Siechtum").  However, these words do not adequately encapsulate the full meaning of their resulting compound, even when considered together.

Buzzword: A buzzword is a word or phrase that becomes very popular for a period of time.  Buzzwords often derive from technical terms yet often have much of the original technical meaning removed, being simply used to impress others, although such "buzzwords" may still have the full meaning when used in certain technical contexts.

Supporting paragraphs: Propaganda (desktop backgrounds) GIMP
Answer: GNU Image Manipulation Program)