The Pakistani rupee registered a marginal gain against the US dollar, appreciating 0.07% during the opening hours of trading in the inter-bank market on Thursday. At 10:15am, the currency was hovering at 280.57, a gain of Re0.20 against the greenback. On Wednesday, the local unit closed at 280.77. Internationally, the yen wallowed near a record low versus the euro and a nine-month trough