This excerpt taken from the PNC 10-Q filed Aug 8, 2007.
INTEREST SENSITIVITY ANALYSIS
In addition to measuring the effect on net interest income assuming parallel changes in current interest rates, we routinely simulate the effects of a number of nonparallel interest rate environments. The following Net Interest Income Sensitivity To Alternate Rate Scenarios table reflects the percentage change in net interest income over the next two 12-month periods assuming (i) the PNC Economists most likely rate forecast, (ii) implied market forward rates, and (iii) a Two-Ten Inversion (a 200 basis point inversion between two-year and ten-year rates superimposed on current base rates) scenario. We are inherently sensitive to a flatter or inverted yield curve.