JavaScript documentation clarifications

[viridia]

• general: A section on freeing / cleaning up resources - what methods need to be called to ensure memory does not leak when adding or removing objects?
• Heightfield: please specify where the origin of the heightfield is. Is it the center, like some other colliders, or is at at the start of the first row/column?
• World.castShare: in the phrase, "The set of colliders taking part in this pipeline." it is not clear what is meant by "pipeline" in this context.
• Capsule.height: Change from "The balls half-height along the y axis." to "The height of the cylindrical section of the capsule along the y-axis, not including the end-caps."
• Triangle: "A shape that is a segment" - I don't know what this means.