if [ `uname` = Darwin ]
then
  export GFORTHPATH=.:/opt/local/lib/gforth/site-forth:/opt/local/share/gforth/site-forth:/opt/local/lib/gforth/0.7.0:/opt/local/share/gforth/0.7.0
fi
# gforth -e 'include docforth.fs s" wrapper.fs" document bye'
# gforth -e 'include docforth.fs s" demo1.fs" document bye'
# gforth -e 'include docforth.fs s" demo2.fs" document bye'
# gforth -e 'include docforth.fs s" demo3.fs" document bye'
gforth -e 'include docforth.fs s" demo4.fs" document bye'