Customers sometime require flow arrows in Review model, exported from Aveva Pdms \ E3D, to indicate flow direction.
Here is a small macro from Andrey, that he shared in telegram channel.
Join to it, if you need simple or even complex support from enthusiasts.
Thanks for sharing,
How to add flow arrow in draf module (PIPING GA) automatically through pml or any way.
Regards,
Mehul patel