Blind musicians Blind musicians Blind musicians are singers or instrumentalists, or in some cases singer-accompanists, who are legally blind. Historically, many blind musicians, including some of the most famous, have performed without the benefit of formal instruction, since such instruction relies extensively on written musical notation. However, today there are many resources available for blind musicians who wish to learn Western music theory and classical notation. Louis Braille, the man who created the braille alphabet for the blind, also created a system of classical notation for the blind called Braille music. This system allows the blind to read and write music just
DOT (graph description language) DOT (graph description language) DOT is a graph description language. DOT graphs are typically files with the file extension "gv" or "dot". The extension "gv" is preferred to avoid confusion with the extension "dot" used by early (pre-2007) versions of Microsoft Word. Various programs can process DOT files. Some, such as "dot", "neato", "twopi", "circo", "fdp", and "sfdp", can read a DOT file and render it in graphical form. Others, such as "gvpr", "gc", "acyclic", "ccomps", "sccmap", and "tred", read DOT files and perform calculations on the represented graph. Finally, others, such as "lefty", "dotty", and "grappa", provide an interactive