HTX communicates with Netscape by means of X resources, in essence looking for a window on your X display which was created by Netscape. If there is more than one of these, the first one will generally be used. If it cannot find such a window, HTX will start a new invocation of Netscape to create one.
One problem with this arrangement is that HTX may detect an invocation
of Netscape running on a different machine but displaying on the
same X display. In this case, attempts to communicate with it will
succeed, but the browser may not necessarily be able to access the
local files that HTX asks it to view (but
see §). The best way around this
problem is to ensure that the browser to be used by HTX is started
first.