Purpose: To collect definitions of terms used in Tk documentation. (The documentation itself leaves many things undefined.)
----

   scanning:   ?? (obviously not the same meaning on the [canvas] as in [scan])
Using the middle mouse button to scroll the contents of a [listbox], [text] widget, [entry] widget, or other
scrollable widget.  This feature appears to be unique to Tk -- no other major toolkit supports it.

   window:   Can refer to pretty much any part of the screen which is managed as a unit, and need in general not be something that the OS would recognise as a window. [Scrollbar]s, [button]s, [canvas]es, etc. are all considered to be individual windows in Tk. Windows that are not a part of another window are called [toplevel]s in Tk. Windows are organised in a hierarchy, where the "." character is used in the same way as "/" is used in the hierarchy of unix file names. Thus the root window is called "." (a period), the children of the root have names like ".content", and children of the children of the root names like ".content.upper". Windows will usually not be visible until they have been assigned a ''geometry manager'', such as [pack] or [grid].



----
[Category glossary]