The Description list shows a description of the method selected in the list of methods, or of the generic function itself if no method is selected.
The following information is listed:
The method object that is selected in the list of methods.
The lambda list of the generic function.
The class of method combination for the generic function.
To operate on any of the items displayed in this area, select them and choose a command from the Description menu. This menu contains the standard action commands described in Performing operations on selected objects. You can operate on more than one item at once by making a multiple selection in this area.
LispWorks IDE User Guide (Unix version) - 25 Nov 2011