XRECTS - plot rectangles on a two-dimensional grid

xrects x1min= x1max= x2min= x2max= [optional parameters] <rectangles

Required Parameters:
x1min minimum x1 coordinate
x1max maximum x1 coordinate
x2min minimum x2 coordinate
x2max maximum x2 coordinate

Optional Parameters:
color=red color used for rectangules

Optional resource parameters (defaults taken from resource database):
width= width in pixels of window
height= height in pixels of window
nTic1= number of tics per numbered tic on axis 1
grid1= grid lines on axis 1 - none, dot, dash, or solid
label1= label on axis 1
nTic2= number of tics per numbered tic on axis 2
grid2= grid lines on axis 2 - none, dot, dash, or solid
label2= label on axis 2
labelFont= font name for axes labels
title= title of plot
titleFont= font name for title
titleColor= color for title
axesColor= color for axes
gridColor= color for grid lines
style= normal (axis 1 horizontal, axis 2 vertical) or
seismic (axis 1 vertical, axis 2 horizontal)