What's that two-bracket or pair of slopes like schematic symbol next to a data line?
TX_LED_N and TX_LED_P nets' naming convention says they are differential. It might be a instruction to the layout designer to route the lines strictly length matched tracks on PCB. It might also depend on the tool, the tool might automatically support pairing of differential signals and indicate the same via the symbol posted in OP. Below image from below link in comment.