Gina Trapani, founder of the website you're reading right now, popularized a plaintext format for to-do lists way back in 2006 (please excuse any weird formatting on that nearly 20-year-old article).

The team tested if AI systems that process text and images—known as multimodal large language models (MLLMs)—can answer ...

That will soon be joined by “Add to Calendar” when Gmail detects event ... It presumably makes use of an LLM’s ability to understand text.