Re: The Prob class

[Patrick McCarty]

On 2009-08-20, Trevor Daniels wrote:
> I'm trying to complete the 'prob' entry in the Technical glossary.
> From a position of ignorance I've come up with this:
> 
> "PRoperty OBjects, or @strong{probs} for short, are instances of
> the @code{Prob} class, a simple base class for objects which have
> mutable and immutable property alists.  The @code{Music} class
> derives from @code{Prob}.  Instances of the @code{Prob} class are
> also created to hold the formatted content of system grobs and
> titling blocks during page layout."
> 
> Is this correct, accurate, complete?

I think it's accurate enough for now.  (Meaning I'm not sure if it's
entirely accurate)

For completeness, I would mention that the @code{Stream_event} class
also derives from @code{Prob}.

> As an aside, why does the Grob class not derive from Prob?

I don't know.

-Patrick