This is the inscription on the pylon/tower and is useful info!

In this case “AJ” is the reference of the power line, so the power=line way should be tagged `ref=AJ`. This will show up on [openinframap](https://www.openinframap.org).

“001” is the tower number along the line - I’d probably set the ref tag on the power=tower to `ref=AJ 001` as the line reference and tower number uniquely identifies the tower.

The “TYPE: PL16 DDT90 E30” is the specific design type of the tower, which is something that even I am not quite nerdy enough to care about but [some people definitely are](https://telcontar.net/Power/pylons/PL16). I’d probably put that in the design:ref tag, e.g. `design:ref=PL16 DDT90 E30`