## Not run: 
# local(envir=.PBSmodEnv,expr={
#   # use openFile directly:
#   openFile( "doc/PBSmodelling-UG.pdf", package="PBSmodelling" )
# })
# local(envir=.PBSmodEnv,expr={
#   # via doAction in a window description file:
#   createWin( "button text=help func=doAction width=20 pady=25 bg=green
#   action=\"openFile(`doc/PBSmodelling-UG.pdf`,package=`PBSmodelling`)\"", astext=TRUE)
# })
# local(envir=.PBSmodEnv,expr={
#   # Set up Firefox to open .html files (only applicable if Firefox is NOT default web browser)
#   setPBSext("html", '"c:/Program Files/Mozilla Firefox/firefox.exe" file://%f')
#   openFile("foo.html")
# })
# ## End(Not run)
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