Binary package “tk” in ubuntu-rtm 14.09

Toolkit for Tcl and X11 (default version) - windowing shell

 Tk is a cross-platform graphical toolkit which provides the Motif
 look-and-feel and is implemented using the Tcl scripting language.
 .
 This package is a dependency package, which depends on Debian's default
 Tk version (currently 8.6).