doc = WLDocument.from_file(main_input, provider=provider)
             pdf = doc.as_pdf(save_tex=options.save_tex,
                         cover=options.with_cover,
             doc = WLDocument.from_file(main_input, provider=provider)
             pdf = doc.as_pdf(save_tex=options.save_tex,
                         cover=options.with_cover,