OpenVPMS is designed to be used with Firefox, Chrome, or Safari.
The Context Sensitive Help facility provides help when you press Alt-F1 on most screens.
By default, the help is displayed in a separate browser window. If you want it displayed in a tab rather than a new window, try the following:
Note that both Context Sensitive Help and Print Previews are treated as pop-ups by browsers and may be blocked. You will need to enable pop-ups for your OpenVPMS site.