Method Get():setFocus() Foundation
Gives input focus.
:setFocus() --> self:setFocus() returns a reference to the Get object.
:setFocus() gives input focus to the Get object. When a Get object processes this method, the data code block is evaluated with no argument, its return value is assigned to the edit buffer, and all internal instance variables that have meaning only when the Get object has focus as well as the exported instance variables :changed, :clear, :decPos, :original, :pos and :type are set to their default values. The edit buffer is then displayed using the second color held in the instance variable :colorSpec.
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