How to Use a Publishing Template in a PDF Transformation
From Oxygen XML Editor/Author
A publishing template can be used for PDF output from the DITA Map PDF - based on HTML5 & CSS transformation scenario (or from the DITA PDF - based on HTML5 & CSS transformation scenario).
The Templates tab in the transformation scenario dialog box displays all the templates that are available in your template gallery. To use a particular template in the transformation scenario, simply select it from this tab and then continue configuring the transformation using the other tabs to suit your needs.
- Open the transformation scenario dialog box by editing a DITA Map PDF - based on HTML5 & CSS transformation (or a DITA PDF - based on HTML5 & CSS transformation scenario).
 - 
            
In the Templates tab, click the Configure Publishing Templates Gallery link to.
Step Result: This will open the preferences page.
 - 
            
Click the Add button and specify the location of your template directory.
Step Result: Your template directory is now added to the Additional Publishing Templates Galleries list.
 - Click OK to return to the transformation scenario dialog box.
 
Result: All the templates contained in your template directory will be displayed in the preview pane along with all the built-in templates.
From a Command Line
pdf.publishing.template parameter to point
        to the *.opt (publishing template)
        file:dita.bat 
	--input=map\test.ditamap" 
	"-Dpdf.publishing.template=full_path_to_template_dir/my_template.opt" 
	--format=pdf-css-html5 
	...Or use the two parameters to indicate the folder containing the publishing
        templates and the name of the publishing template file relative to that folder:
        dita.bat 
	--input=map\test.ditamap" 
	"-Dpdf.publishing.template=full_path_to_template_dir" 
	"-Dpdf.publishing.template.descriptor=my_template.opt"
	--format=pdf-css-html5 
	...dita process by passing it a DITA OT Project File. Inside the project file you can specify as
      parameters for the webhelp-responsive transformation type the WebHelp-related
      parameters.