A '''stacked [channel]''' sits atop another channel, which may itself be a stacked channel, and mediates the flow of data to or from that channel. ** Description ** Stacked channels were first implemented in the [Trf] extension by [aku], and in the [Changes in Tcl/Tk 8.5%|%8.5] period made their way into [the Tcl core]. ** Documentation ** [http://www.tcl.tk/man/tcl/TclLib/ChnlStack.htm%|%Tcl C API]: ** Commands ** [chan pop]: [chan push]: ** Examples ** [TLS]: ** See Also ** [channel]: All ''channel'', All the Time! <> Channel | Concept