-- usage: gf --run < infinitives.gfs  or  gf> eh infinitives.gfs 
--? echo "loading TestLangGer.gf and TestLangEng.gf ..."
--i TestLangGer.gf TestLangEng.gf
? ls -l infinitives.lin.out infinitives.lin.tmp
? echo "remove infinitives.lin.tmp"
? rm infinitives.lin.tmp
? echo "linearizing infinitives.trees to infinitives.lin.tmp ... "
rf -file="infinitives.trees" -lines -tree | l -lang="Ger,Eng" -treebank | wf -file="infinitives.lin.tmp" 
rf -file="infinitives.trees" -lines -tree | l -lang=Ger -table | wf -file="infinitives.lin.tmp.txt" 
? ls -l infinitives.lin.out infinitives.lin.tmp
? echo "diff infinitives.lin.out infinitives.lin.tmp" 
? diff infinitives.lin.out infinitives.lin.tmp
? ls -l infinitives.lin.out.txt infinitives.lin.tmp.txt
--? echo "diff infinitives.lin.out.txt infinitives.lin.tmp.txt" 
--? diff infinitives.lin.out.txt infinitives.lin.tmp.txt