Question: larger fonts in side and horizontal bars

I have upgraded my monitor  to a 4K monitor. I know how to enlarge the fonts in work-sheets and thow to increase the icons size. Is it possible to  alsoincrease the font size in the side and horizontal bars? They are ridicously small. The zoom factor facility in Tools-> Options does noit work, May this is has to be done  by some guid setting. I w\ould appreciate any help.

Thank you

Fernando

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