@Schoko went toward the supermarket does not imply that the subject got the destination. The grammatical property is different. I guess スーパーマーケットの方へ駅まで行く is possible, while スーパーマーケットへ駅まで行く is not.
@snailboat Ancient Chinese people wrote top to bottom, so they hated to move their pen up and down. 辶 is often sometimes written like ㄘ without the horizontal bar in cursive script, so that it can be joined to the next character.
左, 右, 有 You see, whether to wring --- first or / first depends on the direction of the next stroke. But nowadays, everybody just copies the printed font, so this stroke order does not make sense anymore.
@snailboat Me too. Because I write with my right hand, every time when I'm not sure, I try to write something, then I know which side is left, which is right.