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 ## Introduction
-apis-main is the name of energy sharing software for autonomous distributed control of energy developed by Sony CSL. apis-main is installed in each node (battery system connected to the DC grid via a bidirectional DC/DC converter). Via the Device Driver, the software periodically obtains the remaining capacity of the battery and automatically carries out energy sharing between nodes by nagotiating with other apis-mains in accordance with behavior rulesets determined by each node’s remaining battery capacity. Negotiations between apis-mains use a communication line such as Ethernet, and the energy sharing takes place with direct current on the DC grid. apis-main does not rely on software that carries out centralized control of nodes. All nodes have the same software, apis-main, and autonomous distributed control is carried out with only apis-main in each node.  
+apis-main is the name of energy sharing software for autonomous distributed control of energy developed by Sony CSL. apis-main is installed in each node (battery system connected to the DC grid via a bidirectional DC/DC converter). Via the Device Driver, the software periodically obtains the remaining capacity of the battery and automatically carries out energy sharing between nodes by negotiating with other apis-mains in accordance with behavior rulesets determined by each node’s remaining battery capacity. Negotiations between apis-mains use a communication line such as Ethernet, and the energy sharing takes place with direct current on the DC grid. apis-main does not rely on software that carries out centralized control of nodes. All nodes have the same software, apis-main, and autonomous distributed control is carried out with only apis-main in each node.  
 
 Refer to the [apis-main_specification](#anchor1)  for more information