https://github.com/WICG/handwriting-recognition/blob/main/explainer.md#the-prediction-result

segmentationResult: [TODO] Come up with a way to represent text segmentation.

Just a reminder that segmentation strategies can be very different across languages.

Some scripts don't separate words (at all), some do so with special wordspace characters, rather than spaces. Some don't have sentence punctuation, but separate phrases with gaps, or use punctuation in somewhat different ways, some not only don't separate words but also combine letters at the end+start of a word, etc.

So some flexibility will be needed, and it's really important to avoid the trap of relying on spaces to indicate segmentation boundaries.