Contract transactions are the same as calls, except transactions always initiate a state-change. This means that something within the contract, like a variable, changes. This changes the state of the blockchain, which incurs a cost. Transaction calls can also change the state, or value, of something _without_ the contract having to return anything. Calls do not necessarily initiate a state-change. Calls are able to simply request the content or value of a variable. Calls will always return something, whereas contract transaction may not.
Call a contract.
Run this command by right clicking on a method name and selecting Aion Virtual Machine → Remote → Contract Transaction.
This is similar to the Call command with some subtle differences. Call internally invokes
_call which gets executed in the node and no NRG is required. Contract Transaction invokes
_sendTransaction which sends a transaction to the network and needs NRG to execute.