## 28.13 Miscellaneous

`isColor`

  > `Tk.isColor`

  Is `true`, if the current display supports colors.

  Is defined as

  > `Tk.isColor={Tk.returnInt winfo(depth '.')}>1`

`addXScrollbar`

  > `{Tk.addXScrollbar` `+BarTcl``` `+ToScrollTcl``}`

  Attaches a horizontal scrollbar defined by `BarTcl` to a scrollable widget defined by `ToScrollTcl`.

`addYScrollbar`

  > `{Tk.addYScrollbar` `+BarTcl``` `+ToScrollTcl``}`

  Attaches a vertical scrollbar defined by `BarTcl` to a scrollable widget defined by `ToScrollTcl`.

`getId`

  > `{Tk.getId` `V``}`

  Returns a virtual string `V` that can be used as new unique tickle identifier.

`getPrefix`

  > `{Tk.getPrefix` `V``}`

  Returns a virtual string `V` that can be used as prefix for new unique tickle identifiers. It is guaranteed that appending integers to `V` yields unique identifiers.