TempDirectory /var/lib/dhelp/tmp
WordThreshold 50000
FilterFile *.gz    gunzip -c %f > @/var/lib/dhelp/tmp/%B
FilterFile *.pdf   pdftotext %f @/var/lib/dhelp/tmp/%B.txt
FilterFile *.ps    pstotext  %f > @/var/lib/dhelp/tmp/%B.txt

IncludeFile HTML *.htm*
IncludeFile Text *.txt
