"format.dot" = "dot";
"format.canon" = "dot";
"format.xdot" = "dot";
"format.imap" = "map";
"format.cmap" = "html";
"format.cmapx" = "xhtml";
"format.ismap" = "map";
"format.plain" = "txt";
"format.plain-ext" = "txt";
"format.ps" = "ps";
"format.ps2" = "ps";
"format.pdf" = "pdf";
"format.epdf" = "pdf";