AI usually adapts to you. Now you can make it obey you.
Google is rolling out a new feature inside Google Docs that allows users to set custom rules for Gemini, shaping how the AI writes, edits, and responds directly inside documents.
This is a quiet but important shift.
Because instead of prompting the AI every single time, users can now define instructions once, and Gemini will follow them consistently.
Think of it like setting a personality or style guide.
You can tell Gemini things like: write formally
keep responses short
follow a specific tone or structure
And those rules stick.
So every time you use Gemini in Docs, it already knows how to behave.
This solves a common frustration.
Normally, working with AI involves repeating yourself, reminding it how you want things written, formatted, or structured.
Now that becomes automatic.
And that changes the workflow.
Instead of prompting repeatedly, users can focus on refining ideas while the AI aligns with their preferences in the background.
This also mirrors a broader trend in AI tools.
Personalisation is becoming the next layer.
Not just smarter responses.
But more consistent ones.
Google has already been pushing Gemini deeper into its Workspace tools, allowing it to summarize documents, rewrite text, and even generate content inside Docs.
With rules added, that experience becomes more controlled.
And more predictable.
There is also a productivity angle.
For teams, shared rules could standardize writing styles across documents, ensuring consistency in reports, proposals, and internal communication without manual editing.
For individuals, it reduces friction.
Less time correcting.
More time creating.
But it raises a subtle question.
If AI starts following predefined rules strictly, does it become more useful or less flexible?
Because creativity sometimes comes from variation, not consistency.
Still, the direction is clear.
AI is moving from reactive to configurable.
From something you prompt…
To something you train to behave your way.
So the real question is not whether Gemini can follow your rules.
It is whether controlling AI like this will make people more efficient, or slowly turn writing into something that feels predictable and automated.
