Choose Help > On Symbol... to search for help on the symbol under the point (in an editor-based window) or the current object of a tool. This option displays the Search dialog described in Searching the online manuals, but with options pre-selected to enable you to search for documentation on the current symbol. Click OK , and the results of the search are displayed in your HTML browser.
LispWorks IDE User Guide (Windows version) - 25 Nov 2011