Keyword Detail

&key (stream *standard-output*) UseGraphics

• &key specifies the arguments that follow are keyword arguments

• Each argument can either be a two-element list, a three-element list, or a single symbol

  • Three-element list is used for supplied-p arguments, described later on

• Default value of an argument, when not passed by the caller, is the second element of the two-element list, or NIL if not otherwise specified

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