Create the ControllingFor header template. The DEFINE HEADER statement and its attributes create the header template ControllingFor. The DYNAMIC statement declares dynamic variables so that they can be used in expressions. The TEXT statement specifies the text of the header by using dynamic variables that represent label variables and names. In this example, the expression in the TEXT statement resolves to false, so the ControllingFor header does not show up in the output.

The STYLE= attribute specifies style information for the headers.

   define header ControllingFor;
      dynamic StratNum StrataVariableNames StrataVariableLabels;
      text "Controlling for" StrataVariableNames / StratNum > 0;
      style=header;
      end;