TMF8821 Sensor Orientation for default operation?

I’m looking using the TMF8821 sensor from SparkFun. But I don’t know the orientation of the sensor. When looking at the front of the sensor, which axis is vertical, and which direction is horizontal? (I know that one can buy one, and rotate it to find out, but I want to design it into a something, like bot chassis. I would like the FOV to widest Horizontally, and have Vertical default to +up and -down. I searched the datasheets and SparkFun’s notes, but didn’t see it.

I did find it in the Hookup Guide. Thanks for great documentation. (I needed to look deeper!)