Another spot this is documented in on p.316 of the Camel book (3e), in the section "Package-Quoted Classes". This section also discusses the conditions under which Perl knows that a particular bareword is a module name, and how that forces a method call.

In reply to Re: Re: Capitalized subroutine names and packages by roundboy
in thread Capitalized subroutine names and packages by elusion

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