Okay, I understand that. But how can I stop httrack adding ".html" at the end
of files when original urls to the files do not have ".html"

If I download binary without a file extension httrack does not add ".exe" to
it. It just leaves it without file extension. This is same behavior I want for
page links which do not specify ".html" in the url. I want the file saves as
"1234" NOT "1234.html".

Thank you again