/usr/share/doc/onboard/onboard-default-settings.gschema.override.example is in onboard-common 1.4.1-2ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 | [org.onboard]
layout='Compact'
theme='Nightshade'
key-label-font='Ubuntu'
key-label-overrides=['RWIN::super-group', 'LWIN::super-group']
xembed-onboard=true
[org.onboard.window]
docking-enabled=true
force-to-top=true
|