About help opens a message dialog that displays the copyright notice and version number of the program. In application mode, including Web Start, a Licence button also appears in this message dialog. When this button is clicked the Licence Conditions dialog opens to indicate the conditions that apply when program code is copied to the user's hard disk or other non-volatile storage medium. Licence conditions are not relevant when applet mode is used, provided program code is not retained in non-volatile memory. In applet mode, the Licence button does not appear on the About dialog.