TRichView.TabNavigation

Mode	Meaning
rvtnNone	No special actions for Tab (default for TRichViewEdit). A focus (dotted) rectangle is not drawn around hyperlinks, it's impossible to open hyperlink with Enter .
rvtnTab	Tab-navigation through links and controls using Tab and Shift + Tab (default for TRichView);
rvtnCtrlTab	Tab navigation through links using Ctrl + Tab and Ctrl + Shift + Tab . Has a limited application since users still need to use Tab and Shift + Tab when the focus is set on inserted control.

Note: a special tab navigation is not supported in editor. Although it has TabNavigation property, it's impossible to change its value from rvtnNone.