have to execute at run time to link the text field to the instance
variable "city."
In this example, the outlet--a text field that is referred to by the outlet vari-
able "city"--is in fact a data entry field. "Outlet" is a messaging concept and
doesn't indicate the direction in which data flows in your application.
Actions
Connections are also made for actions--and here the direction
of data flow is critical. Action connections are made from con-
trol objects (such as buttons) to the objects that you create. Ac-
tions not only have a source and destination, but also have a
message that ...
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