send - send a value down a Tk channel \f5send chan string Send is the gateway from the Tk world into the Limbo world. It sends string down chan , which should previously have been named with a call to namechan (see tk (2)). Tk channels are non blocking, so the call will return immediately, whether the message has been sent or not. If too many messages have been queued on the chan , then the message will be discarded, and a warning printed on the console. String is not subject to interpretation by the usual Tk quoting rules. String is not subject to interpretation by the usual Tk quoting rules. This means, for example that: .EX radiobutton .x -text X -variable x -value x radiobutton .y -text Y -variable y -value y button .z -text Submit {send chan submit [variable X]} will not work as expected. Instead, one must interrogate values directly in Limbo.

The specialised queued channels will be replaced by buffered channels in Limbo in a future edition of Inferno.