+#define MATROSKA_ID_TAG 0x7373
+#define MATROSKA_ID_SIMPLETAG 0x67C8
+#define MATROSKA_ID_TAGNAME 0x45A3
+#define MATROSKA_ID_TAGSTRING 0x4487
+#define MATROSKA_ID_TAGLANG 0x447A
+#define MATROSKA_ID_TAGDEFAULT 0x44B4
+#define MATROSKA_ID_TAGTARGETS 0x63C0
+#define MATROSKA_ID_TAGTARGETS_TYPE 0x63CA
+#define MATROSKA_ID_TAGTARGETS_TYPEVALUE 0x68CA
+#define MATROSKA_ID_TAGTARGETS_TRACKUID 0x63C5
+#define MATROSKA_ID_TAGTARGETS_CHAPTERUID 0x63C4
+#define MATROSKA_ID_TAGTARGETS_ATTACHUID 0x63C6