As with many of the other tools in the LispWorks IDE, you can sort the items in any of the lists or graphs of the Class Browser using the Preferences dialog. Raise this dialog as described in Setting preferences, and then select Class Browser in the list on the left side.
Figure 8.4 Setting Class Browser preferences
Under the General tab, there are three options for sorting items, listed in the Sort panel.
For more information on sorting items, see Sorting items in views.
LispWorks IDE User Guide (Macintosh version) - 25 Nov 2011