g several\nof the most commonly needed types of data, along with\ninterpolation of strings from the configuration or the system\nenvironment (e.g. @$(HOME)@).\n\n* Subscription-based notification of changes to configuration\nproperties.\n\n* An @import@ directive allows the configuration of a complex\napplication to be split across several smaller files, or common\nconfiguration data to be shared