The Function area displays the name of the function being examined, and here you can enter the name of another function to examine. You can use completion to reduce typing. This allows you to select from a list of all functions in the current package whose names begin with the partial input you have entered. Invoke completion by
Up
,
Down
or click the 
button. See Completion for detailed instructions. When you have entered the complete function name, click 
to confirm your choice
LispWorks IDE User Guide (Unix version) - 25 Nov 2011