nextcloud-desktop/doc/userguide/images/icons
..
callouts
caution.png
example.png
home.png
important.png
next.png
note.png
prev.png
README
tip.png
up.png
warning.png

Replaced the plain DocBook XSL admonition icons with Jimmac's DocBook
icons (http://jimmac.musichall.cz/ikony.php3). I dropped transparency
from the Jimmac icons to get round MS IE and FOP PNG incompatibilies.

Stuart Rackham