I did not know that pdfsync was universal but why do you want to send a file with pdfsync ; pdfsync is not a part of the "File".

the pdfsync package creates a helper file with extension pdfsync. So any programs that are designed to use it could use it. It is not bound to something very specific to Tiger. In that sense it is more universal. It has existed way before Tiger, and in other platforms.

I am not sending pdfsync with the file any more than adding \usepackage{geometry} sends any extra data along. The packages used by the file are for me part of the file. pdfsync is just another package. It just happens to not alter the appearance of the resulting pdf file, like most other packages do.

Haris