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Kévin Commaille 2026-01-27 12:06:35 +01:00 committed by GitHub
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Clients supporting the `ol` HTML element must also support the `start` attribute, as per [MSC4313](https://github.com/matrix-org/matrix-spec-proposals/pull/4313).

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@ -84,6 +84,10 @@ Additionally, web clients should ensure that *all* `a` tags get a
`rel="noopener"` to prevent the target page from referencing the
client's tab/window.
{{% added-in v="1.18" %}} Clients that support rendering numbered lists via the
`ol` tag MUST also support the `start` attribute in order to prevent loss of
meaning of a message due to the numbering of list items.
Tags must not be nested more than 100 levels deep. Clients should only
support the subset of tags they can render, falling back to other
representations of the tags where possible. For example, a client may