Motion/Tweens is unclear.

[Clozent]

I'm referring to the document at this path: content/tutorial/02-advanced-svelte/01-motion/01-tweens The same document on the website: https://learn.svelte.dev/tutorial/tweens

This page is very unclear, to me at least.

1. What is tweening, and what does a tweened() store actually do?
2. What is a p => t function, and what do p and t stand for? Assuming p is for position and t is for time, shouldn't it be the opposite, with the function receiving a point in time and returning a position?
3. What is value in (from, to) => t => value? Is it the value between from and to to display? Why not specify?