I'm trying to convince the support team at Opera browser to support MHTML files
produced by HTTRACK.  It seems that they have support for "single captured
pages", as what might be generated by the "save page" option in IE 6-8, but
not a series of pages with navigational structure, in the kind of structure
that would be spidered from a website with HTTRACK.

Is HTTRACK following MHTML specification by allowing this type of navigational
structure in a MHTML file?  If so, how may I identify it to Opera support?
Having a cross-platform browser support MHTML fully would be beneficial to the
community.