If a hotspot is marked with the "This hotspot is also a bookmark"
option on the Hotspot properties dialog box, then that hotspot can be used
to set the initial view point and zoom of a VR image. When you refer
to a web page created by The Panorama Factory, you can add the hotspot
name to the web page's URL to choose the initial view using the
"http://url#bookmark" notation.
Unfortunately, this does not seem to work properly for QTVR images when
their web pages are shown by Internet Explorer. It seems to work
properly in some other browsers, notably Firefox.
The problem seems to be caused by differences in the way that Internet
Explorer and Firefox interpret the HTML code created by The Panorama
Factory.