... function)¹

Currently the event has to be specified as a string as with Tk. In future releases perhaps a more Lispy style might be used.

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... function:²

It is not required to have a defgeneric definition for each generic function, as to the standard, defmethod implicitly generates the definition if they do not exist, but as SBCL issues a warning in this case and shipped code preferrably should not issue warnings on compilation, I add the defgeneric statements for all generic functions I create.

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