In the following sections, we give a brief tour around HTK's widgets. We have simple widgets which are explained in short sentences of words with less than three syllables, menus, text widgets, and canvasses, which require a slightly longer explanation.
There are more widgets: if you can use Tix (an enhance version of Tcl/Tk; you should consider using it anyway, it looks slightly less clunky than plain Tcl/Tk), there are the useful tab and pane widgets. And because HTKis an abstraction on top of Tk, there are a variety of so-called mega-widgets which are implemented in Haskell; these can be found in the toolkit (Sect. 10).