Class question: what is (my $!var) ?

[John M. Dlugosz]

I've come back to this:

my $!var — class attribute, no accessor,  not inheritable.  How is this 
different from a normal lexical variable?  Role composition can show 
differences?

What's the point?


our $!var — class attribute, no accessor, inheritable.

But private variables are not inherited.  What does that mean?

--John