If you use Copilot often, you may have noticed a new Copilot Notebook option, which despite being available to users now, Microsoft has yet to announce publicly. So what is the feature, and how can you use it? I tried it and here's what I found. 

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Even though Microsoft hasn't acknowledged the feature, Jordi Ribas, Microsoft's CVP of Search and AI, confirmed via X that Notebook fully shipped in Copilot and described it as, "a new interface for crafting, improving, and revising your prompts without chat dialogue." 

The Notebook feature is listed at the chatbot's interface, next to where it saysCopilot , as seen in the image at the top of the article. When you click on it, you are met with a different layout of its standard chatbot. There are two text boxes, with the left one prompting you to "Write a detailed prompt to collaborate with Copilot," and the right one reading, "Copilot will create your content here."

One of the biggest and most helpful differences is that the character limit in Notebook is 18,000 characters, as opposed to the 4,000 character limit found in Copilot. This allows users to use Copilot assistance for longer materials, including longer essays, papers, or articles that the user wants to be proofread or even summarized. 

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The ease of editing prompts, which as seen by Ribas' tweet, seems to be the true purpose of the Notebook. In Copilot, if you want to tweak a prompt, you have to edit it and brand-new results will be generated, losing the context of the previous answer. 

However, by eliminating the chat dialogue, in Notebook it is much easier to tweak the prompt because it keeps your previous prompt in the left box intact, even when the result has been generated. This means you can easily tweak the older prompt, adding or deleting any text you need. Additionally, Notebook remembers the previous version even after you tweak your prompt.

When testing it myself, I found that the Notebook performed as promised, making it easier to tweak prompts because of the layout, and remembering the context of the previous prompt. However, I found it difficult to find a sample prompt where this feature would be particularly necessary. 

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I could see Notebook being useful when coding. In the past, when I used a chatbot for coding purposes, making tweaks was tedious as it required lots of copying and pasting so as not to lose the previous context and still make the necessary edits. However, because I don't code frequently, I will likely use Notebook for its longer character input, which could be useful for summarizing longer bodies of text.

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