3 Evaluation and Compilation 3.4 Lambda Lists 3.4.1 Ordinary Lambda Lists 3.4.1.4 Specifiers for keyword parameters
3.4.1.4.1 Suppressing Keyword Argument Checking
If &allow-other-keys was specified in the lambda list of a function,
keyword2 argument checking is suppressed in calls
to that function.
If the :allow-other-keys argument is true in a call to a function,
keyword2 argument checking is suppressed
in that call.
The :allow-other-keys argument is permissible in all situations involving
keyword2 arguments, even when its associated value
is false.
3.4.1.4.1.1 Examples of Suppressing Keyword Argument Checking
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