and line. For example:</span></p>
      <p><span class="ts3">&nbsp;</span></p>
      <p class="ps22"><span class="ts4">codegen -s CUSTOMER -t FILEIO_CLASS </span><span class="ts22">-define ATTACH_IO_HOOKS</span><span class="ts4">&nbsp;-r</span></p>
      <p><span class="ts3">&nbsp;</span></p>
      <p><span class="ts3">And is used to include or exclude parts of the code in a template file by evaluating the presence or absence of the identifier via special </span><span class="ts4">&lt;IF DEFINED_</span><