at on in page 9

You would say on page 9

I would never say 'in' page 9. A certain passage might be in page 9, but the pages itself would not.

If a book is laid before me on the desk, and it is open, I seeing a certain page, can I use all If a book is laid before me on the desk, and it is open, I seeing a certain page, can I use all these?:

-I am at/on/in page nine.
-I am at/on/in page nine.
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"on" is the normal neutral, WB. "at" does see uses as a more specialized, nuanced use.

I can't imagine any use for 'in' with page, book yes, but not page.

Thank you~

I can't imagine any use for 'in' with page, book yes, but not page.

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In the text on page x it says ....

THank you~

If a book has usage notes on its pages, then can I say?:

-In/On a usage note, it says...

1. I am not sure about the preposition.
2. Is it possible to say A USAGE NOTE? It doesn't sound right, because we very often say NOTES.

In.

If a book has usage notes on its pages, then can I say?:

-In/On a usage note, it says...

1. I am not sure about the preposition.

'In' means contained within certain text. 'on' could see use if someone had scribbled something on top/ over the USAGE NOTE

2. Is it possible to say A USAGE NOTE? It doesn't sound right, because we very often say NOTES.

Yes, if it's a USAGE NOTE then call it that.

Thank you~~