Font attributes are used to write labels on edited objects, of various
 info classes respective to FC2 format (behav, struct, logic, hook).

 Font can be changed individually, or on selected sets of
 labels altogether, through any button in the <Attribute>:<Font>
 menu. Font buttons in the menu are assigned through X11 resources

atg*font<int>         (for instance atg*font5 :*-times-medium-r-normal--10-*),
atg*postscriptFont<int>                  for postscript printing.

 Their number must be provided as: 

atg*nbFonts : <int>

 The default font for labelling each object type is set by resources, as
 well as a font for highlighting the labels. Resources names are:

atg*behavLabelBoxFont
atg*behavLabelBoxPostscriptFont

 and similarly for vertex, port, edge or web instead of box, and
struct, logic or hook instead of behav.