A [Tk] (or rather [Ttk]) [widget] that stacks a bunch of widgets on top of each other in a window, with some tabs at the top to allow users to select between the widgets. A common idiom in Windows's Properties dialogs.


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A [notebook] may be used as a '''pages manager'''[http://wiki.tcl.tk/17852] by using a style to turn off the tabs, like this (by [Joe English]):
    style theme settings default {
	style layout Plain.TNotebook.Tab null
    }
    ttk::notebook $nb -style Plain.TNotebook