The Help Menu is used for accessing all documentation for DS9. New to version 2.2, DS9 documentation is in HTML format and is stored internally. No external web browser, nor internet access is need to access the documentation.
Display the Reference Manual.
Keyboard Short Cuts
Display all keyboard and mouse bindings
Frequently Ask Questions. Display a short discussion on common questions.
A short discussion on new features that have been added recently.
A list of know issues, bugs, and features.
Latest release notes for this version of ds9.
Contact information for detailing any problems, questions, or suggestions you may have concerning the use of DS9.
DS9 Home Page
Displays the DS9 Home Page in the internal web browser. Can be used to download the latest DS9 version.