If you right-click any of those parameters, there's aWhat's This? context menu you can click. Among that documentation, you should see a table with the programmatic parameter name and its options.
For example, the "Log simulation data" option says the following:
In test_actuators/Engine+Actuator, replace Revolute Joint I and Revolute Joint II with Spherical Joints. You don't have enough degrees of freedom with revolute joints.
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