[Interest] Q_NAMESPACE is not portable?

[Jason H]

> Sent: Friday, August 23, 2019 at 7:02 PM
> From: "Giuseppe D'Angelo via Interest" <interest at qt-project.org>
> To: interest at qt-project.org
> Subject: Re: [Interest] Q_NAMESPACE is not portable?
>
> On 24/08/2019 00:10, Matthew Woehlke wrote:
> > Am I doing something wrong, or is it impossible to use Q_NAMESPACE
> > correctly without platform-specific PP conditionals?
>
> I've fixed this in 5.14, see
>
> > https://doc-snapshots.qt.io/qt5-dev/qobject.html#Q_NAMESPACE_EXPORT

"This is useful f.i. if the object needs to be exported from a dynamic library."
what's "f.i."? "For instance"? Isn't that "e.g." (but definitely not i.e.)