No mention of how refX and refY on `<symbol>` are not supported by the major browsers.

### MDN URL

https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/Attribute/refY

### What specific section or headline is this issue about?

Symbol

### What information was incorrect, unhelpful, or incomplete?

It should *really* be prominently stated that `refX` and `refY` on the ``-element are *not* supported by apparently any browser despite having been part of a recommended spec for a decade and the same attributes on ``-element being widely supported for years.

### What did you expect to see?

A prominently featured warning that this feature that's being covered in-depth by the MDN documentation is not in fact functional. I really could save people a lot of confusion, frustration and time.

This should be mentioned on every page that talks about it, yet it is not mentioned anywhere:
- [``-element page](https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/Element/symbol)
- [`refX`-attribute page](https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/Attribute/refX)
- [`refY`-attribute page](https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/Attribute/refY)

### Do you have any supporting links, references, or citations?

Example SVG that illustrates the issue.

```svg

```

### Do you have anything more you want to share?

_No response_

### MDN metadata

Page report details

* Folder: `en-us/web/svg/reference/attribute/refy`
* MDN URL: https://developer.mozilla.org/en-US/docs/Web/SVG/Reference/Attribute/refY
* GitHub URL: https://github.com/mdn/content/blob/main/files/en-us/web/svg/reference/attribute/refy/index.md
* Last commit: https://github.com/mdn/content/commit/3e543cdfe8dddfb4774a64bf3decdcbab42a4111
* Document last modified: 2025-06-23T16:41:39.000Z