SymbolTable st = doc.getSymbols();
ByteArrayInput bis = new ByteArrayInput(data, pos, len);
XMLCompressedInput xci = new XMLCompressedInput(bis, st);
byte signature = xci.readByte();
byte entityType = (byte) (signature & 0x1F);
switch (entityType) {
case Signatures.ENT_DEFINED:
nodeName = st.getName(xci.readShort());