Thank you for the explanations. There is just one more thing: Are the semantics of 
package P;
$A = 'something';

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better matched by 
package P;
$P::A = 'something';

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or by 
package P;
our $A = 'something';

[download]
or do they all differ from one another?

In reply to Re^2: how to declare a package variable by scigeek
in thread how to declare a package variable by scigeek

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