Numeric enhancements in 4.5

["CV" <atauqua at hit dot net>]

There are several enhancements in 4.5 of interest to those who deal with
numerics. These efforts are appreciated. Thanks, RS.

I'll mention two of them along with a question, quoting from the 4.5 Release
Notes:

  - In the IDE, "Variables window displays doubles with slightly less
precision". I'm very familiar with this one. For example, with d as double:

                                    d = 2.5265/.00000564    // Showed
447960.9929078014101833 in 4.0.2
                                                                         //
Now shows 447960.9929078014 in 4.5, a better
                                                                         //
reflection of the PPC Numerics Standard for doubles.

  - In the IDE, "Doubles now show correct precision even on large numbers
(like 12345e+20)."

I'm sure that the second one is equally welcome, but I can't quite identify
it. What is the change and how can I demonstrate it?

Thanks,

Jack