After trading on both sides, soybeans, wheat and corn all closed higher in quiet trade. Wheat and soybeans were helped by good export sales volume last week, and while export corn sales were unimpressive, the influence from the other markets helped pull corn up to a modestly positive close. General Comments Outside markets were volatile overnight and again today. Stocks were all over the place with the Dow being down as much as 131 points, then up 39 points before closing down just 3 points. Crude oil fell below $90 before recovering to close up 13 cents at $90.86. The U.S. dollar index reversed and closed lower. Concerns about Europe's weak economy and the economic slowdown in China are unabated.None of the above seemed to matter much to...