Abstract: Disclosed are methods, apparatus, systems, and computer readable storage media for interacting with one or more data objects in an online social network. A user interface includes a publisher with a custom action. The custom action is defined in accordance with custom action instructions provided by a first entity via an application programming interface (API). Such custom action instructions may declaratively or programmatically define the data object, the interaction to be performed with the data object, and other attributes associated with the custom action. A user may request to interact with the data object via selection of the custom action by a second entity. Information may be submitted through the publisher to interact with the data object to update a database system associated with the data object. A feed item may be presented for inclusion in the information feed based on the update.

Abstract: A liquid ejection apparatus comprising a fluid line configured to extend into a tank and to receive a liquid, a rotary head being arranged on the pipe and fitted with a rotary hub that comprises a liquid ejection nozzle for ejecting the liquid, the rotary head being rotatable in a first direction and the rotary hub being rotatable in a second direction, such that the liquid ejected by the nozzle is ejected in a pattern on an interior surface of the tank. The liquid ejection nozzle comprises a first liquid outlet capable of ejecting the liquid in a first direction towards the interior surface of the tank, and a second liquid outlet capable of ejecting the liquid in a second direction towards the interior surface of the tank.

Abstract: A liquid ejection apparatus comprising a fluid line configured to extend into a tank and to receive a liquid, a rotary head being arranged on the pipe and fitted with a rotary hub that comprises a liquid ejection nozzle for ejecting the liquid, the rotary head being rotatable in a first direction and the rotary hub being rotatable in a second direction, such that the liquid ejected by the nozzle is ejected in a pattern on an interior surface of the tank. The liquid ejection nozzle comprises a first liquid outlet capable of ejecting the liquid in a first direction towards the interior surface of the tank, and a second liquid outlet capable of ejecting the liquid in a second direction towards the interior surface of the tank.