int W3AopenDoc(const char *url, int method, int flags, const char *referer); int W3AreadDoc(int fd, char *buf, size_t nbytes); int W3AwriteDoc(int fd, const char *buf, size_t nbytes); int W3AcloseDoc(int fd); int W3AinfoDoc(int fd, W3ADocumentInfo *info); int W3AdeleteDoc(const char *url, const char *referer);