package Some:Module;
use vars q/test/;

## Here "Global symbol "$test" requires explicit package name".
$test = 1; 

sub inHere {
    our $test; # ok.
    our $tset; # typos/thinkos causes errors.
    my $test;  
# my variable "$test" overrides variable with the same name at different scope...
}

1;
Some::Other::Module;

sub inThis {
    our $test; ## is an error.
}