Links: different view and new window

Hi,

I've just read this article "How to Stop Opening Links in New Windows
without Warning" (
https://knowbility.org/blog/2019/links-opening-new-windows-no-warning) and
it recommends to add an HTML element "img" in the HTML element "a" as
follows:

<img src="new-window.png" alt="Opens in a new window">

That image is very similar to which appears in W3C website for links that
navigates to a different view:

<svg aria-label="Different View" class="icon-different-view ">

However, I only found recommendations about new windows in WCAG:

- https://www.w3.org/TR/WCAG20-TECHS/G200.html
- https://www.w3.org/TR/WCAG20-TECHS/H83.html

"It is recommended that when links are opened to a new window, there is
advance warning."
"For those not using assistive technology, the indication would also be
available from the link text."

Please, what's the recommendation in this sense? Is it the same for a
different view and a new window?

Thanks in advance!

Best regards,
Raquel