Actually Tunar support tabs but people sometimes want that those tabs are showed permanently like those tabs in firefox (is only an example, nonoe especific) I think that a option for show tabs permanently indiferent if only 1 tab is used can by great onther people (like my mom) want a buttom for open a new tab directly from thunar whitout need to use a key combination this can improve experience for virtual keyboard user that use thunar removing the need of call the virtual keyboard every time that they need open a new tab in the same directory what you say PD: any of those two can by added to mousepad or another bug/feature request is needed for mousepad??
Read the hidden settings section in the manual.
I talking about a non-hiden option anythink more visible for any user and hiden IN the manpage?? in this canse that option need to by documented