What does "ai" stand for?

[jhsu2R56R]

Just curious what the "ai" in "aiStandardSurface" etc. stands for.

I'm assuming it's Arnold i-something? Can't find a reference anywhere.

Instance? Illumination? Integer? Inky? Igloo? Iguana? I-candy?

[sebastien.blaineau.ortegaHRM3U · Accepted solution]

interface 🙂

[jhsu2R56R]

Ooo, nice. That's a good i-word

[jjbbqq]

You seem to be right. I found some reference below:

AiBegin()

Marks the beginning of a block which uses the Arnold rendering interface API.

4.0.14.0 - Arnold User Guide

Creating a node is done with the usual AiNode() interface.