= send: send a value down a Tk channel     send chan string Send  is  the gateway from the Tk world into the Limbo world.It sends string down chan, which should previously have  beennamed  with  a call to namechan (see tk(2)).  Tk channels arenon blocking, so the call will  return  immediately,  whetherthe  message  has been sent or not. If too many messages havebeen queued on the chan, then the message will be  discarded,and  a warning printed on the console.  String is not subjectto interpretation by the usual Tk quoting rules. == bugsString is not subject to interpretation by the usual Tk quot‐ing rules.  This means, for example that:     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 val‐ues directly in Limbo. The specialised queued channels will be replaced by  bufferedchannels in Limbo in a future edition of Inferno.