/**
\mainpage The Caliper API reference.

\section main_user Caliper user APIs

\li For documentation on the macro, C++, and C source-code annotation APIs,
  see \ref AnnotationAPI.
\li The \ref ControlChannelAPI provides means to access and
  control built-in %Caliper configurations and enable measurements
  from within a target program.

\section main_cxx C++ API reference
For the complete C++ API reference, see \ref cali.

\section main_c C API reference
See cali.h.
*/