code: public String htmlModuleHelpDescriptions() {
  
          StringBuffer html = new StringBuffer(1024);
          Iterator<String> itModules = sortModules(getAvailableModules().values()).iterator();
          for (int i = 0; itModules.hasNext(); i++) {
              String moduleName = itModules.next();
              CmsModule module = getAvailableModules().get(moduleName);
              if (CmsStringUtil.isNotEmptyOrWhitespaceOnly(module.getDescription())) {
                  html.append(getHtmlPart("C_HELP_START", "" + i));
                  html.append(module.getDescription());
                  html.append("\n");
                  html.append(getHtmlPart("C_HELP_END"));
                  html.append("\n");
              }
          }
          return html.toString();
      }
docs: Returns html code for the module descriptions in help ballons.<p>
  
  @return html code