I tried to download a page:
<https://computing.llnl.gov/tutorials/openMP/>
with:
httrack -%i <https://computing.llnl.gov/tutorials/openMP/> -#L1000000 -A100000
-n -%s -%u -F firefox -%I -p7 -%k -s2
I got blocked:


REQUEST BLOCKED

The requested URL was blocked for one of the following reasons:

    Illegal character or values
    Invalid URL/request
    Your browser presented an improper cookie to the web site

Please clear your browser cookies and restart your browser. 


I guess I have to say something like "robots=off". Can You help me?