SN74AVC2T245: Pin 1 marking ID

Part Number: SN74AVC2T245

Tool/software:

Hello,

Full PN: SN74AVC2T245RSWR

I need the top marking document to identify Pin 1 location as I am trying to understand which one is the orientation dot, and what's the other dot-pattern meanings?  we have different dot-pattern on 2 projects, and one part has a mysterious short

Thanks,

Quynh