> For the complete documentation index, see [llms.txt](https://docs.yarnspinner.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.yarnspinner.dev/3.1/api/csharp/yarn.markup/yarn.markup.lineparser/yarn.markup.lineparser.markupdiagnostic/yarn.markup.lineparser.markupdiagnostic.op_equality.md).

# M:Yarn.Markup.LineParser.MarkupDiagnostic.op\_Equality(Yarn.Markup.LineParser.MarkupDiagnostic,Yarn.M

TYPENAME\_UNKNOWN in [MarkupDiagnostic](/3.1/api/csharp/yarn.markup/yarn.markup.lineparser/yarn.markup.lineparser.markupdiagnostic.md)

## Summary

```csharp
(no declaration available)
```