In this datasheet LCD Datasheet There is a couple diagrams showing the connections from the display to the processor. (pg 4) On the far right side there is a circuit showing a 10k trimpot for display brightness I assume. My question is, what's the little arrows off the wires? I've always thought those were grounds but it doesn't look like a good place for grounds to me. What are they showing me here?
A triangle with the point pointing downwards is a ground, upwards is a supply and to the side when the wire is going off the page in a multi page schematic. A triangle on its side with the wire coming from the point is coming from another sheet in a multi page schematic.