''Based on Tcl/Tk 8.6a2''

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**Tcl Changes**

***Changes to Tcl Commands***
****New Commands****

   * [oo::class] [http://tip.tcl.tk/257]
   * [oo::copy]
   * [oo::define]
   * [oo::objdefine]
   * [oo::object]

   * [tcl::unsupported]::[coroutine]
   * [tcl::unsupported]::[tailcall]
   * [tcl::unsupported]::[yield]

****New Subcommands****

   * [binary decode] [http://tip.tcl.tk/317]
   * [binary encode]
   * [chan pipe] [http://tip.tcl.tk/304]
   * [chan pop] [http://tip.tcl.tk/230]
   * [chan push]
   * [interp cancel] [http://tip.tcl.tk/285]

****Expanded Syntax / New Options****

***Changed Tcl behavior***

   * The following commands are script-modifiable [ensemble]s: [binary]

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**Tk Changes**
***Changes to Tk Commands***
****New Commands****

   * [ttk_vsapi]

****New Subcommands****

****Expanded Syntax / New Options****

***Changed Tk behavior***

   * GIF images written with LZW compression.

****New Events****

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**Changes to Bundled Packages**
***New packages***

***Updated packages***

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%|[Category Documentation]|[Changes in Tcl/Tk]|%
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