Template indicating the supported GRF version.
Version ≤ 6 | {{pl/Development/NewGRF/grfTill|6}} | GRFv≤6 |
Version 7 only | {{pl/Development/NewGRF/grfTill|7}} | GRFv≤7 |
Version ≥ 8 | {{pl/Development/NewGRF/grfTill|8}} | GRFv≤8 |
Things valid in all GRF versions don't need any special indication.