plsym: Plots a symbol at the specified points 

DESCRIPTION:

    Marks out a set of n points at positions (
    x[i], 
    y[i]), using the symbol defined by code.  The code is interpreted as
    an index in the Hershey font tables. 

SYNOPSIS:

plsym(n, x, y, code)

ARGUMENTS:

    n (PLINT, input) :      Number of points to be marked. 

    x (PLFLT *, input) :    Pointer to array with set of x coordinate
    values for the points. 

    y (PLFLT *, input) :    Pointer to array with set of y coordinate
    values for the points. 

    code (PLINT, input) :    Code number for the symbol to be plotted.