``` fieldset("Configuration") { is...

# tornadofx

[mikehearn]

fieldset("Configuration") {
                isFillWidth = true

                hbox {
                    vbox {
                        field("Node Name", op = { nodeNameField() })
                        field("Nearest City", op = { nearestCityField() })
                        field("P2P Port", op = { p2pPortField() })
                    }
                    vbox {
                        field("RPC port", op = { rpcPortField() })
                        field("Web Port", op = { webPortField() })
                        field("Database Port", op = { databasePortField() })
                    }
                }
            }