More information on Black Maiden can be found here.

Demos are executable programs which produce engaging computer graphics and music in real time. Programming, art and music composition skills are stressed. Demos are similar in some ways (but are not equivalent) to music videos or short films.

More information on demos and the surrounding demoscene can be found on demoscene.info.

For a great Introduction in Textmode-Art we would like to refer to an introducing Article at artpacks.acid.org (one of the former major sources for Ansi, Ascii and Hires art). Really worth reading.

Article at artpacks.acid.org