There are a few pre-defined settings files that you can find in config folder. These are Meteor files and all settings can be accessed as showed on Meteor Website. UI settings are also available as OHIF.uiSettings. See the schema for more information.
dropCollections (boolean): the server will drop all Mongo collections when it's set to
trueas soon as it has finished starting. This is useful for demo and development environments.
studyListDateFilterNumDays (integer): define the default date filter (range) on study list. If it's 02/15/2017 and this config is set to 5 then it will search for studies between