Those images are part of the "master slides".  Each of the four initial 
slides in the template uses a different master slide.  The master slides 
have the images placed behind other content.  You can assign whichever 
master slide you want to each slide (Slide > Master Slide), including 
the initial four and any others you add, to pick up the corresponding 
image (and layout of text placeholders).
Mark.
Dotan Cohen wrote:
To clarify, this template has a different "background" on each slide.
As stated in the OP, it's not really a background as it is not using
the Impress background feature, but for display purposes it appears to
the view as a different background on each slide. This is not a custom
animation.
On Tue, Jan 21, 2020 at 3:04 PM Dotan Cohen <dotancohen@gmail.com> wrote:
The Focus template has an interesting effect, in which the first slide
has the appearance of a closed shutter and each slide after it has the
shutter open slightly more. I see that these slides do not have a
background, so the shutter effect is _not_ a background image.
How is this effect achieved?
--
Dotan Cohen
http://gibberish.co.il
http://what-is-what.com
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