Mumbai, Jan. 31 -- Firm dollar overseas and rising international oil prices are likely to keep the Indian rupee under pressure in opening trades on Friday although positive cues from equities could limit downside in the unit. Yesterday, rupee depreciated 7 paise to close at 86.63 against the US dollar, weighed down by a strong US dollar amid a hawkish tone of the US Federal Reserve. Rupee continued to face pressure due to sustained foreign fund outflows and the broad strength of the American currency in the overseas markets. At the interbank foreign exchange, the rupee opened on a weak note at 86.58 and touched a high of 86.56 and a low of 86.65 against the American currency during the session. Meanwhile, the benchmark S&P/BSE Sensex ended ...