# Io Reference

Core / Core / Call

|  | Call stores slots related to activation.
|  | activated Returns the activated value. argAt(argNumber) Returns the message's argNumber arg. Shorthand for same as call message argAt(argNumber). argCount Returns the number of arguments for the call. Shortcut for "call message argCount". coroutine Returns the coroutine in which the message was sent. delegateTo(target, altSender) Sends the call's message to target (and relays it's stop status). The sender is set to altSender, if it is supplied. Returns the result of the message. delegateToMethod(target, methodName) Sends the call's message to target via the method specified by methodName. Returns the result of the message. description Returns a description of the receiver as a String. evalArgAt(argNumber) Evaluates the specified argument of the Call's message in the context of it's sender. evalArgs Returns a list containing the call message arguments evaluated in the context of the sender. hasArgs Returns true if the call was passed arguments. message Returns the message value. relayStopStatus(arg) Sets sender's stop status (Normal, Return, Break, Continue etc.) and returns evaluated argument. resetStopStatus(arg) Sets stop status to Normal. See also `Call setStopStatus`. sender Returns the sender value. setStopStatus(aStatusObject) Sets the stop status on the call. slotContext Returns the slotContext value. stopStatus Returns the stop status on the call. (description of stopStatus will be added once we decide whether or not to keep it) target Returns the target value.