The Save template as button (at the bottom-left of the transformation dialog box for WebHelp Responsive or PDF - based on HTML5 & CSS transformations) can be used to export the currently selected template into a new template package that can be used as a starting point to create your own custom template. The result will be a ZIP archive that contains a template descriptor file and other resources (such as CSS files) that were attached to the selected template.
<name> element in the template descriptor file. This
information is displayed as the name of the template in the transformation scenario
dialog box. <description> element in the template descriptor file. This
information is displayed when the user hovers over the template in the transformation
scenario dialog box.<parameters> section of the template descriptor file. If any of
the parameter values point to a file path that references a template resource (such as
CSS files, custom HTML fragments, images), those resources will automatically be copied
to the new template package and their references will be changed
accordingly.The same publishing template package can contain both a WebHelp Responsive and PDF customization and you can use the same template in both types of transformations (DITA Map WebHelp Responsive or DITA Map to PDF - based on HTML5 & CSS). This option specifies that the custom template will include a WebHelp Responsive customization.