i copied <https://docs.duet3d.com/en/User_manual/Reference/Gcodes> and it
appeared complate ok.
when i load the index in the browser i get a blank page.
i used the setting from
<https://superuser.com/questions/532036/trouble-using-wget-or-httrack-to-mirror-archived-website>.

httrack <https://docs.duet3d.com/en/User_manual/Reference/Gcodes> '-*'
'+*/docs.duet3d.com/*' -N1005 -#p -B -%v -%k -w -s0 -v

this is only the second time i've used httrack so suggestions are appreciated.