/*01 Minimal*/
create or replace function test_01_HelloWorld
  return clob is  
begin
  plxls_xml.init; -- Initialize instance
  plxls_xml.addWorksheet(p_Name => 'FirstWS'); -- add worksheet
  plxls_xml.addRow; -- add a row to the current Worksheet
  plxls_xml.addCell_String_1('Hello World!'); -- add a cell to the current row
  
  return plxls_xml.getdoc;
end;
/