|03:39 pm, August 18th - Excel: =IF(OR|
By itself, the OR function has limited usefulness, but combining it with the IF function can be helpful.
Assuming this function is located in cell C1, if any of these three cells (B1,B2, or B3) contains a value greater than 100, the IF function will show the statement Over Budget in cell C1. If all three cells have numbers less than or equal to 100, the IF function shows the statement Acceptable in cell C1.
Taken from http://spreadsheets.about.com/od/excelfunctions/qt/or_function.htm