Trading in the U.S. index futures suggests that Wall Street stocks may open Wednesday’s session modestly higher even as the global economic outlook looks subdued. After data showed that the Chinese manufacturing sector continued to stutter, Markit reported fairly positive private sector activity data for the eurozone. The trigger set in motion buying in the oversold European markets, where the major averages are notably higher. Commodities are staging a comeback, while the dollar is subdued. Traders may also keep a close eye on activity in the commodity market and flash estimate of U.S. manufacturing activity data for September.