This dialog shows the application's about dialog and information about the application. The personal licence code is shown under the owner's name at left; for privacy purposes it is blacked out in the screen grab.
The "Register…" or "Register again…" button (caption depends on registration status) allows you to insert or update your licence information.
The OK button closes the dialog.
The number of remaining months of free upgrade subscription are shown at the top right of the dialog.
The user's remaining time of entitlement to free upgrades can also be checked via Tinderbox Up To Date dialog.