Most fonts in the X
Window System are associated with an XLFD, which contains a number
of different fields that are delimited by a dash (-) character. The
fields in the XLFD indicate properties such as the font family name,
weight, size, resolution, and whether the font is proportional or
monospaced. See your X Window system documentation for more information
about the XLFD and font names that are used with the X Window System.