[pqb]

Uh, that's interesting, but it does not work for me :(

AFAIK, VO+Command+Return can be used to select multiple things, not to click. For example, in the file viewer (Finder.app, similar to Nautilus/explorer.exe), it is similar to pressing Control (win/linux) and the left mouse button when the cursor is over a file to add it to the selection.

Edit: To open a page in a new tab in a Firefox with stock VoiceOver, I need to press VO+Shift+M to open context menu (aka right-click menu), and then select an option from the list (by greping, using arrows etc.).

[extra88]

VoiceOver is most often, and best, paired with Safari.

By default, Command-Return, no VO key, opens a focused link in a new tab behind the current tab. It's not a VoiceOver-specific keyboard command. It also works in Firefox and Chrome.

However, by default, Safari does not focus links when pressing the Tab key, you need to go to Settings > Advanced and check "Press Tab to highlight each item on a webpage" first.

[pqb]

Thanks, I didn't know about that.