Append text to the HTML file REPORTS. This DATA step writes to the file that is referenced by REPORTS. The PUT statements create an H2 header in the HTML file.

data _null_;
   file reports;
   put "<h2>The preceding output is from PROC PRINT.";
   put "I am going to try a variety of procedures.";
   put "Let me know which procedure you prefer.";
   put "By the way, this report uses the D3D style.</h2>";
run;