load_file("nrngui.hoc")
objref g
g = new Graph()
proc spkplt() {localobj x, y
clipboard_retrieve($s1)
printf("read %d spikes\n", hoc_obj_[1].size)
x = hoc_obj_[1]
y = hoc_obj_[0]
g.size(x.min, x.max, y.min, y.max)
y.mark(g, x, "|", 5, $2, 1)
}
spkplt("out.dat", 1)