You should send in a documentation patch for perlvar then, because I pulled this line from there: 
This can be used to determine whether the Perl interpreter exe-
cuting a script is in the right range of versions.  (Mnemonic:
use ^V for Version Control.)  Example:

    warn "No \"our\" declarations!\n" if $^V and $^V lt v5.6.0;

[download]

In reply to Re^3: Problems with 'our' definition with perl 5.00503 by tilly
in thread Problems with 'our' definition with perl 5.00503 by cosmicperl

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