//! Renders the canvas to the target
virtual bool render(ProgressCallback *cb=NULL)=0;
//! Sets the RendDesc for the Target to \a desc.
/*! If there are any parts of \a desc that the render target
** is not capable of doing, the render target will adjust
//! Renders the canvas to the target
virtual bool render(ProgressCallback *cb=NULL)=0;
//! Sets the RendDesc for the Target to \a desc.
/*! If there are any parts of \a desc that the render target
** is not capable of doing, the render target will adjust