UM:Preference Load Order
Preference files are loaded in an order such that later ones (if they exist) will override earlier ones. The load order is as follows :
System settings :
- Presets \ System \
- System \
Users settings :
- Presets \ Users \
- Users \ AllUsers \
- Users \ <username> \
Presets are always loaded first, followed by any global or shared settings (e.g. AllUsers) and then the specific preferences set, if they exist (e.g. for user "Tom").
The specific overrides the global or shared.
This mechanism allows easier customisation while using a known base configuration.