Mumbai, Nov. 6 -- The Indian rupee strengthened under 94 per US dollar as local stocks extended an impressive upmove. Currency market also eyed supportive policy directives after Securities and Exchange Board of India (SEBI), has revised the limits on taking positions in currency derivatives contracts involving the Indian rupee (INR) without establishing underlying exposure. The revised framework allows domestic clients and foreign portfolio investors (FPIs) to take long or short positions of up to US$5mn (million) in notional value across all INR currency pairs, combined across recognised stock exchanges. INR added 51 paise to 93.90, hitting six-month high. US dollar index edged up near 102 mark today but INR witnessed a ferocious rally ...