Keystroke: r from Help menu
From time to time Duxbury releases updates or service releases for DBT to respond to braille rules changes, to add new features, and to fix occasional problems that occur.
This option opens your web browser to the Duxbury "Check for Updates" website and advises you if any new versions, services releases, or supplemental files are available for your version of the program. Service releases are free. Newer versions may be free or low cost depending on how long ago you purchased your software.