struct FD_document;
struct FD_document_paper;
struct FD_document_class;
struct FD_document_language;
struct FD_document_options;
struct FD_document_bullet;
struct FD_document;
struct FD_document_paper;
struct FD_document_class;
struct FD_document_language;
struct FD_document_options;
struct FD_document_bullet;