opendap/src/main/java/opendap/dap/DSequence.java
private byte readMarker(DataInputStream source) throws IOException {
        byte marker = source.readByte();
        // pad out to a multiple of four bytes
        byte unused;
        for (int i = 0; i < 3; i++)
            unused = source.readByte();

        return marker;
    }
private byte readMarker(DataInputStream source) throws IOException {
        byte marker = source.readByte();
        // pad out to a multiple of four bytes
        byte unused;
        for (int i = 0; i < 3; i++)
            unused = source.readByte();

        return marker;
    }
Reads a marker byte from the input stream.