## Not run:
#
# # Plot the 'trees.dat' file in the current working directory:
# Plotstand()
#
# # Open a dialog box to select a trees.dat file:
# Plotstand(file.choose())
#
# # Save a snapshot to a .png file.
# # Note: make sure to move the 3D plot into view
# # (so that other windows are not blocking it!)
# snapshot3d('myforest.png')
#
# # For publication-quality graphs:
# Plotstand(nz=50, nalpha=50)
#
#
# ## End(Not run)
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