/** \brief attribute node (type, value) pair as used in RPN */
struct ccl_rpn_attr {
/** \brief next attribute */
struct ccl_rpn_attr *next;
/** \brief attribute set */
char *set;
/** \brief attribute node (type, value) pair as used in RPN */
struct ccl_rpn_attr {
/** \brief next attribute */
struct ccl_rpn_attr *next;
/** \brief attribute set */
char *set;