The WITH statement lists variables with which correlations of the VAR statement variables are to be computed. The WITH statement requests correlations of the form , where are analysis variables that you specify in the VAR statement and are variables that you specify in the WITH statement. The correlation matrix has a rectangular structure of the form

For example, the statements

proc corr; var x1 x2; with y1 y2 y3; run;

produce correlations for the following combinations: