snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

tools/documentation.vnufilter

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+# Warnings that are probably less important.
+
+Consider using the “h1” element as a top-level heading only — or else use the “headingoffset” attribute \(otherwise, all “h1” elements are treated as top-level headings by many screen readers and other tools\)\.
+Document uses the Unicode Private Use Area\(s\), which should not be used in publicly exchanged documents\. \(Charmod C073\)
+Section lacks heading\. Consider using “h2”-“h6” elements to add identifying headings to all sections, or else use a “div” element instead for any cases where no heading is needed\.
+
+# Opinionated informational messages.
+
+Trailing slash on void elements has no effect and interacts badly with unquoted attribute values\.