How to GPUParticles2D's Trails

Godot Version

4.2.1

Question

I am trying to create a trail and found that PGUParticles2D has a thing called “Trails” but enabling it erases the particle.
How do I use this? And what does it do?

put a sub emitter, that sub emitter with trail enabled will be your trail effect

oooohhh so the trail just makes it so that another particle will follow the previous particle location

thanks!