/*!
\page vt_page_front Vt : Value Types
\if ( PIXAR_MFB_BUILD )
\mainpage Vt : Value Types
\publicLib
\endif

\section vt_overview Overview

Defines classes that provide for type abstraction (VtValue) and enhanced array types (VtArray).  The Vt library also provides functions for manipulating value types.  This library operates on the level of language data types and there are differences in the C++ and Python interfaces.

\section vt_value Type Erasure with VtValue
The VtValue class wraps type objects (float, int, bool, GfVec3d, and so on) in a type-agnostic container that includes functions for determining the content type within the container.  The VtValue class is found in the C++ API only, since Python does not have the strong type restrictions of C++.  Python to C++ type conversion is handled automatically by the system.  

\section vt_array Shared Arrays - VtArray
The VtArray class represents an arbitrary length homogeneous container.  In the C++ API, the constructor lets you create an array of a specified size.  The VtArray interface on the Python side is implemented as a set of typed array classes (for example, BoolArray, StringArray, Vec4dArray).
*/