of the braces are thinned one by one, as a function of their
location and their role. The bracing (all of the braces considered
together) is a major element in the Construction of the guitar.
It forms ridges on the soundboard, permitting it to resist
the pull of the strings. If the bracing is too flexible, the
soundboard might be deformed; if the braces are overdimensioned,
they will block its vibrations.