[V4REV] symbolic constants

[Robert Brenstein]

>>
>>Actually Transcript itself is very weak here. No constants...
>
>Transcript has constants. Local to function or to an object. It does 
>not have constant globals. There are technical reason for not having 
>them. But agreed that there are no constants that are useful for you.
>

One trap which you mentioned is that gobals have to be redeclared at 
least once in each object.

Another trap is that since a global is not constant, users can change 
the value.

Calling a function to set those constants as I suggested has a plus 
that it can be called as often as desired, like to reset them when 
needed.

Further, when the number of those constants goes up, a parameter can 
be added to set only a subset in a given call.

Robert