display an engraver settings values

[Juan Cristóbal Cerrillo]

Hello,

I find that, given my somewhat dubious understanding of the relationship 
between engravers, I spend a lot of time looking at the internals and 
overriding values to see if that will have the effect I’m trying to achieve.
Thinking about this, I realised that it might be very helpful to have a 
function that would print to standard output all the values of for instance the 
TimeSignature engraver at the moment were the function is placed in the music.
Any idea how I might go about achieving this?

All best,

jc