India, Feb. 23 -- Indian equity benchmarks cut most of their gains in late morning deals to trade near their neutral lines, with both the Sensex and the Nifty trading marginally higher. Positive cues from other Asian markets helped key indices to trade in green terrain. However, gains got trimmed, as investment through participatory notes (P-notes) in the Indian capital market dipped marginally to Rs 84,976 crore as on January 31 after hitting 31-month high value at the end of the preceding month. At December-end, the investment through such instruments had risen to a 31-month high of Rs 87,132 crore, reflecting the bullish stance of FPIs.On the global front, Asian markets were trading in green, after consumer confidence in South Korea impr...