In-place completion presents the choice of complete inputs in a special non-modal window. Example in-place completion window below shows this in the context of the editor command
Figure 3.11 Example in-place completion window
While this window is visible, most keyboard gestures such as unmodified alphanumeric and punctuation keys are processed as ordinary input, adding to your partial input. This reduces the number of possible completions. Conversely, deleting part of your input will increase the number of possible completions.
You can navigate the choice with
and you can select the desired completion at any time with
or double-click. To cancel the attempt to complete, press
LispWorks IDE User Guide (Unix version) - 25 Nov 2011