Argument: Any
Result: None
Valid for: System and APL (child task) object
The Signal method allows
the child task to send a message to the parent, and vice versa. It is used in conjunction with the onSignal event, as
follows:
In both cases, the Signal method optionally takes an
argument, which can be any APL array (or an APLX overlay created using ŚOV). This is typically used to send a command to the other task, or to return
a result to it. Any argument to the Signal
method is available to the receiving task as the ŚWARG system variable during the execution of the callback.
See the section on APLX Multi-tasking for more details.