Child Package Operator Visibility

["pakman" <pakman744@nospam.com>]

Recently, in the process of illustrating Ada 95 child packages in a course I 
teach, I implemented the Fractions.Comparisons package from N. Cohen's Ada 
as a Second Language, 2nd ed text. In the test program, I withed the 
Fractions and Fractions.Comparisons packages, and then specified the use 
type Fractions.Fraction_Type for direct visibility of the Fractions package 
operators. I was surprised that the Fractions.Comparisons package operators 
were not directly visible (that is, I was not able to test for A < B). To 
make the example work, I added the use Fractions.Comparisons statement.

So, my questions are: 1) Why didn't the use type work for the 
Fractions.Comparisons operators, and 2) how do I make the operators directly 
visible?

While this is an academic exercise, actual projects using this combination 
of parent and child packages have experienced similar problems.

Thanks,
John Cupak