### Bug description

I would like to suggest en #enhancement that I believe would be beneficial for the Users.

The problem is that when author cross references to different part of the document (i.e. equation from different chapter) user is moved back and forth. How about in html format one could hover over the reference and would see the rendered equation (or a small version of the figure)? That would work like a footnote that is presented when hovered over.

I can see that there could be some issues when author is referencing to a range of equations (Equation 1.1 - 1.3).

### `quarto check` Output

_No response_

### `quarto tools check` Output

_No response_

### Checklist

- [X] [formatted your issue](https://yihui.org/issue/#please-format-your-issue-correctly) so it is easier for us to read?
- [ ] included a minimal, fully reproducible example in a single .qmd file? Please provide the whole file rather than the snippet you believe is causing the issue.
- [ ] documented the quarto version you're running, by pasting the output from running `quarto check` in the "Quarto Check Output" text area?
- [ ] documented the version of the quarto tools you're running, by providing the output from running `quarto tools check` in the "Quarto Tools Check Output" text area?
- [ ] documented the RStudio IDE version you're running (if applicable), by providing the value displayed in the "About RStudio" main menu dialog?
- [ ] documented which operating system you're running? If on Linux, please provide the specific distribution as well.
- [ ] upgraded to the latest version, including your versions of R, the RStudio IDE, and relevant R packages?
2022-08-09T12:55:06Z
Belyor
enhancement
Future
open
Hover over eq reference
https://github.com/quarto-dev/quarto-cli/issues/1757