NROFF_TYPE_NONE   170 src/viewer/nroff.c         return NROFF_TYPE_NONE;
NROFF_TYPE_NONE   171 src/viewer/nroff.c     nroff->type = NROFF_TYPE_NONE;
NROFF_TYPE_NONE   250 src/viewer/nroff.c     nroff->prev_type = NROFF_TYPE_NONE;