ePiX markers are called
by name:
spot(P pt); dot(P pt); ddot(P pt); box(P pt); bbox(P pt); ring(P pt); circ(P pt);spot and (d)dot are solid dots that cannot be colored. box and bbox are solid, colorable squares. A ring is colorable and transparent, while a circ is uncolorable and opaque. Markers in the same column are the same size, and each column is 1.5 times the diameter of the next. The diameter of a dot (hence that of all the above markers) is set with dot_size(diam). The argument, 3 by default, is a number of pt. The glyphs listed in Table 2.1 are available via the command
marker(P pt, <MARKER TYPE>);