Let S be a surface of negative Euler characteristic together with a pants
decomposition P. Kra's plumbing construction endows S with a projective
structure as follows. Replace each pair of pants by a triply punctured sphere
and glue, or `plumb', adjacent pants by gluing punctured disk neighbourhoods of
the punctures. The gluing across the $i^{th}$ pants curve is defined by a
complex parameter t_i in C. The associated holonomy representation \rho:
\pi_1(S) \to PSL(2,C) gives a projective structure on S which depends
holomorphically on the t_i.