Global sizes

[Gilles]

Hello.

Is there an equivalent to

  #(set-global-staff-size 16)

but for fonts?
The manual (v2.4.2) states

  #(set-global-staff-size 14)

  This sets the global default size to 14pt staff height, and
  scales all fonts accordingly.

But the font is *not* sized appropriately.
In other words, is there a way such that one does not have to

  \set Staff.fontSize = #-4

for each Staff separately?


Thanks.
Gilles