The class of the Editor's echo area.
echo-area-pane is used to implement the small window for user interaction, known as the Echo Area, which is at the bottom of Editor windows in the LispWorks IDE.
You should not normally need to work with this class directly. To add an Echo Area, pass
:echo-area t when making the editor-pane.
CAPI User Guide and Reference Manual (Macintosh version) - 3 Aug 2017