10 % Create a slide introducing new sections.
13 \frametitle{Part \thepart, Section \thesection}
16 \usebeamerfont{title}\insertpart: \insertsectionhead\par%
22 % Define a new ``partsecframe'' environment that uses a default frame
23 % title of ``<part>: <section>'' when no other frame title is given.
24 \newenvironment{partsecframe}[1][\insertpart: \insertsectionhead]