public EscherProperty(short id) 
{
        this.id   = id;
}

The id is distinct from the actual property number. The id includes the property number the blip id flag and an indicator whether the property is complex or not.

 public EscherProperty(short propertyNumber,
    boolean isComplex,
    boolean isBlipId) 
{
        this.id   = (short)(propertyNumber +
                (isComplex ? 0x8000 : 0x0) +
                (isBlipId ? 0x4000 : 0x0));
}

Constructs a new escher property. The three parameters are combined to form a property id.

 public short getId() 
{
        return id;
}

 public String getName() 
{
        return EscherProperties.getPropertyName(id);
}

 public short getPropertyNumber() 
{
        return (short) ( id & (short) 0x3FFF );
}

 public int getPropertySize() 
{
        return 6;
}

Most properties are just 6 bytes in length. Override this if we're dealing with complex properties.

 public boolean isBlipId() 
{
        return ( id & (short) 0x4000 ) != 0;
}

 public boolean isComplex() 
{
        return ( id & (short) 0x8000 ) != 0;
}

 abstract public int serializeComplexPart(byte[] data,
    int pos)
Escher properties consist of a simple fixed length part and a complex variable length part.
The fixed length part is serialized first.

 abstract public int serializeSimplePart(byte[] data,
    int pos)
Escher properties consist of a simple fixed length part and a complex variable length part.
The fixed length part is serialized first.