In some apps the tab row is not the page navigation of choice and you would like to have a vertical menu or an image bar.
It is likely common knowledge that you can disable the tab row in the document properties and use buttons or text boxes with "Open Sheet" actions instead. This leads to some extra maintenance effort (new sheet, new objects, new actions).
The attached approach scans the base QVW for new or changed sheet names and adjusts automatically. You have all sheet entries in only one object! (which is a standard QV object, not an extension). So it is close to zero maintenance.