q`<!-- ---------------------------
    <region-function_docs>
    main:
      - name : DoFoo
        desc : do some foo
        usage: DoFoo($optional_greeting);
        </region-function_docs>
        --------------------------- -->`if(000);
    sub DoFoo{
       my $optional_greeting = shift || 'Hello World';
       print "$optional_greeting\n";
       print "we are now doing foo\n";
       print "\n";
    }###end_sub