What are these settings for?
This website relies on a JSON RPC connection and an Etherscan API token. For more reliable operation, consider specifying your own. You can get yours by visiting the links below.
Ethereum nodes: ethereumnodes.com
Etherscan api key: etherscan.io/myapikey
What does “Use built-in ABIs” parameter?
This website includes pre-loaded ABIs for script parsing. If you are having trouble viewing the action items, uncheck this box to load ABIs from Etherscan.
What is the purpose of the ”Use test contracts” parameter?
There may be more than one contract instance on the testnet. This parameter allows you to choose between the test and main contract.