PDF Template PDF Template Container Action: get_pdf PDF Builder Filter: wr_pdf_template_mpdf_config Filter: wr_pdf_template_container_css Filter: wr_pdf_template_template_path Filter: wr_pdf_template_filename Filter: wr_pdf_template_modify_response Filter: wr_pdf_template_mpdf_before_write PDF Builder Functions: get_mpdf_config get_pdf_string merge_pdf_strings get_mpdf_config Load the default config from mpdf. Apply filter: wr_mpdf_config get_pdf_string Returns an compiled pdf as string. merge_pdf_strings This function is the key to combine an array of pdf strings. This is used to add a stationary paper.