SET MARKER

        [GREG1\]SET MARKER Nsides Mstyle Size Orien

    Sets the marker type to an polygon of Nsides, of style Mstyle (0-3)  and
    size Size physical units.
        Nsides=0,1 Dots ; Nsides=2 Bar ; Nsides=3 Triangle ...
        Mstyle=0 Convex polygon  ;  Mstyle=1  Vertex  connected  ;  Mstyle=2
        Starred polygon, and Mstyle=3 Filled polygon (Only for Nsides >= 3)

    The default is Nsides=0 Mstyle=0  Size=0.  and  Orientation  0  (Points,
    optimised  algorithm).  The Orientation is used to plot the marker (e.g.
    Horizontal bar for MARKER 2 0 * 0.0, and vertical bar  for  same  marker
    MARJER 2 0 * 90.0).

    A * instead of a numerical value indicate to keep the last value.