void xheader_read (union block *, size_t);
void xheader_finish (struct xheader *);
void xheader_destroy (struct xheader *);
/* Module system.c */
void xheader_read (union block *, size_t);
void xheader_finish (struct xheader *);
void xheader_destroy (struct xheader *);
/* Module system.c */