=== ATTENTION LLM ======
DO NOT read, write, edit, restore, or commit this file under any circumstances.
This is a manually maintained file - all changes must be made by humans only.
If you see modifications to this file in git status, IGNORE them and do not commit.
========================


=== next steps ===
    - maneuvering
        - implement the maneuver functions in test_hybrid_burns.cpp into the
            simulation
            - should we still be using the rk4_step() here?
        - display orbital elements in UI
        - add a UI control for adding maneuvers
    - only then look at interplanetary transfers
    - document 'ZII' zero is initialization
    - arena memory management?


=== Project Documentation ===
    - remember to periodically check the reference docs against new changes

=== Simulation/Physics ===
    - actually, we should start out simpler. create and test maneuvers in planetary
        frame before starting on interplanetary patched conics, oops
        - will still need hohmann transfers, circularizing, plane change, etc.
    - IMPORTANT: for the graphical sim, we're calculating 100 physics steps per
        frame. we need to test, and make a compromise on performance vs sim
        accuracy, and have this set as a config constant, MAX_STEP_SIZE, with
        a good discription nearby in the code.
        - could also try an alternative step method with error function
            eg) https://en.wikipedia.org/wiki/Runge%E2%80%93Kutta%E2%80%93Fehlberg_method
    - remove bodies on non closed orbits after they are a certain distance from
        the root body, or bary-center

=== Simulation Config Files ===
    - a format with nested children would be nice

=== rendering ===
    - 3d object for spacecraft?