understanding openEXR's 3D coordinate system

I have a problem understanding the openEXR documentation. In the [Technical Introduction](https://openexr.com/en/latest/TechnicalIntroduction.html), there's a section "Projection, camera coordinate system and screen window". Above it there's a drawing. In the drawing, the x axis points to the right. In the text it says:

```
Projection, camera coordinate system and screen window

Many images are generated by a perspective projection. We assume that a camera is located at the origin, O, of a 3D
camera coordinate system. The camera looks along the positive z axis. The positive x and y axes correspond to the
camera’s left and up directions.
...
```
It seems to me that the image and text do not agree about the direction of the x axis. Am I missing something? Which one is correct?

Start with the “Projection, camera coordinate system and screen window” section and its drawing in the Technical Introduction. Compare the stated coordinate convention with the illustration and project documentation sources, then make the wording and diagram consistent and verify the published page renders correctly.

Written by the indexing model from the issue text.