Systole and diastole are conventions used to describe the lower and upper limits of Things, Beings, and various attributes of the Vast, including space, time, and matter. The one exception is the Entities, which are absolute and unchangeable.
Systole and diastole are among the qualities revealed when an intangible such as space or time is iconized as the Six Orbits of Space or the Six Orbits of Time. Each Orbit possesses its own systole and diastole, and the relationships between the Orbits are mediated through them. In this way are otherwise hidden qualities of these intangibles made apparent and subject to study for the purpose of Work and Apotheosis.
As applied to the Six Orbits of Space, the Orbit systole is that part which provides access to the Red Garden at the center of Anesidore. At their diastole they contain the Remembry complex on the ground and the Rose Window on the ceiling directly above.
As applied to the Six Orbits of Time, systole refers to the midpoint of the Orbit, exactly one half of the Orbit. In time-keeping, systole refers to one-half of the measure of its Orbit. As applied to Time and to the Six Orbits of Time, diastole refers to the coincident beginning and end points of the Orbit. In time-keeping, diastole refers to the start of the measure of its Orbit.
As applied to matter, systole and diastolic refer to the effects of time and will, respectively.