dialog. By default, it runs every 7 days on start-up
and checks if there is a newer stable or beta release.
If there is, then a dialog is displayed with a "Download"
button that takes the user to SourceForge.
The settings can also be changed so that it checks for
a) stable releases only, b) stable+beta, c) stable+beta+
dev releases, or d) that it doesn't check automatically.
The number of days between automatic checks can also
be changed (all in the Miscellaneous pane of the
Preferences).
The dialog can be manually invoked by using a menu
item in the Help menu.