Corrections and Clarifications

March 23, 2010

The Baltimore Sun is committed to providing fair and accurate coverage. Readers who have concerns or comments are encouraged to call us at 800-829-8000.

An article in Sunday's Business & Jobs section on the Schedule M tax form should have said the full credit starts to phase out once income exceeds $75,000 for singles and $150,000 for joint filers.

Jay Hancock's column in Sunday's Business & Jobs section quoted a Northwestern University professor who erroneously said that nearly half of National Instruments' research and development is performed by its customers. The company says its customers answer half the questions in its online forums.

The Sun regrets the errors.

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