I would like to know where I can find a list of all possible
defaults write terminal commands.
(Core OS X related commands, not any due to user installed software.)
Apple themselves must have a manual or technical specification for OS X operating systems and such commands.
Here is an example command (which doesn't work in El Capitan by the way) which demonstrates
defaults write com.apple.driver.AppleBluetoothMultitouch.mouse MouseHorizontalScroll -bool NO
I assume such commands simple write to various configuration files hidden in the OS. It would alternatively be useful to find a document describing all such files and their location on