See also "[Using Tcl to write WWW client side applications within the WWW browser]",
"[BrowseX]", "[Invoking browsers]", ...












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I'll explain this at some point:
    package require tcom
    wm overrideredirect . on
    pack [canvas .c -background blue -height 20 -width 20]

    proc paste_on_top_IE toplevel {
        set application [::tcom::ref getactiveobject \
                             InternetExplorer.Application]
        wm geometry . +[$application Left]+[$application Top]
        raise .
        update idletasks
        after 300 [list paste_on_top_IE $toplevel]
    }

    paste_on_top_IE .


Notice the use made of [tcom].

























[[Eventually explain Browser Helper Objects, XUL, toolbar SDK, ...]]



















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Intermediate-level browsing:  communication with an existing browser
instance, as opposed to [invoking browsers]:  under Unix, netscape
recognizes a -remote flag, to try to re-use an existing browser 
process.  Also, Netscape (and other browsers) respond to a few
[DDE] commands, and 
http://www.neosoft.com/tcl/ftparchive/sorted/net/netscape-remote-v1.2/
is a Unix(-only?) extension for communication with Netscape.

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[Category Internet]