[http://incrtcl.sourceforge.net/iwidgets/iwidgets/tabnotebook.gif]

Docs can be found at http://incrtcl.sourceforge.net/iwidgets/iwidgets/tabnotebook.html and http://purl.org/tcl/home/man/iwidgets3.0/tabnotebook.n.html

See also tixNotebook: http://tix.sourceforge.net/man/html/TixCmd/tixNoteBook.htm
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[Category Command], a part of [incr Widgets]