"Geany - The Flyweight IDE ... is a powerful, stable and lightweight programmer's text editor ... It runs on Windows, MacOS and Linux, is translated into over 40 languages, and has built-in support for more than 50 programming languages." (ib., 2019-08-17)
"a text document format for writing notes, documentation, articles, books, ebooks, slideshows, web pages, man pages and blogs. AsciiDoc files can be translated to many formats including HTML, PDF, EPUB, man page."