What is highlight?

You must be asking about the highlights in photography. Let me tell you something,

In general photographic photos, the light and dark parts of the photos are called highlights and dark parts.

Very dark places are called dark parts, and very bright places are called highlights. In general, a highlight warning is set in the camera. If highlighting is turned on,

The alternating flashing of black and white proves overexposure,

At this time, it is necessary to appropriately increase the shutter speed and reduce the aperture to reduce the sensitivity, so as to achieve accurate exposure.

If you don't understand, please ask. ...