From Xojo Documentation
| This item was deprecated in version 2019r2.
Please use BinaryStream.BytePosition as a replacement.
Gets or sets the current file position in the BinaryStream. The first position is numbered zero.
This property is automatically incremented by all of the Read and Write methods.
To move the position to the end of the stream, you can set it to BinaryStream.Length.
This code changes the position from the default position of zero.