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   Multiple "our" declarations in the same lexical scope are
   allowed if they are in different packages.  If they happened to
...
       print $bar;     # prints 30

       our $bar;       # emits warning

 package File_Rating_DB; #pckg ONE
 sub write_db(){}...
...
 package Timed_Display_In_Wins; #pckg FOUR
 our @ISA;
 push @ISA, qw(Entry_Display_In_Wins); sub _handle_timer(){}