I have a newly installed winding staircase in my house as part of a loft extension. The newel posts have notches in them, as shown in the pictures.
My first question is: why are the notches there? I’ve not seen this before, and not knowing a name for them means I can’t Google for answers.
The second question is, what can be done to hide them or make them more attractive? I’ve considered using filler or sanding them down. Is there a standard approach to this problem, or is it just a matter of taste?