Editing Openai/693e48dd-ce3c-800a-b636-9b3efde0fdec (section)

===== - are not drawn =====
* are not captured
* are not anchored to UI
* exist after rendering

What looks like “dilation/constriction” is actually local contrast gain changing in small processing regions. When the tone-mapping state shifts, those regions:
* expand slightly
* contract slightly
* sharpen or soften edges

To the eye, that looks like breathing or pulsing — but it’s not an intentional animation. It’s the display recalculating how aggressively to drive pixels in that region.

This happens most visibly on:
* light backgrounds
* text
* gray or off-white surfaces
* high contrast edges (like letters)