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+## This directive is unknown. It will be ignored.
+
+### Problematic code:
+
+```sh
+# shellcheck foobar=baz
+echo "Hello World"
+```
+
+### Correct code:
+
+Depends on your intention.
+
+### Rationale:
+
+ShellCheck doesn't recognize the [[directive]] you're trying to use in a `# shellcheck` comment. See the [[Directive]]s page for supported directives.
+
+It could be misspelled, or you could be using an older version of shellcheck that doesn't support it yet.
+
+### Exceptions:
+
+None. If you wish to ignore this warning and continue without it, you need version 0.4.5 (commit 88c56ec) or later and a command grouping:
+
+```
+# Ignore an unrecognized directive in 0.4.5 or later:
+# shellcheck disable=SC1107
+{
+  # shellcheck unrecognized=directive
+  echo "Hello World"
+}
+```
+
+Before 0.4.5, unrecognized directives are considered parse errors.
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