Adding an assumption about round brackets and the human language. As per review comment #2075 (comment)

Author: dan-tripp-siteimprove

_rules/visible-label-in-accessible-name-2ee8b8.md

@@ -58,6 +58,8 @@ This rule assumes that the visible label doesn't use CSS to add whitespace where
 
 This rule assumes that for any word which appears in both the accessible name and the visible label, the same spelling and hyphenation is used in both places. For example: if "non-negative" is used in the accessible name and "nonnegative" is used in the visible label, that would violate this assumption. Similarly, if "color" is used in the accessible name and "colour" is used in the visible label, that would also violate this assumption.
 
+This rule - specifically, the [label in name algorithm][] that this rule relies on - assumes that the algorithm's treatment of parentheses is appropriate in the given human language.  "Parentheses" are also known as "round brackets".  The algorithm's treatment of parentheses is to remove them and all characters within them.  This assumption can be reworded as: content within parentheses can be ignored.  This assumption is almost always true in English.  It is known to be often false in other languages, such as German (where parentheses indicate dual states) and Arabic (where parentheses are often used as quotation marks).  Violations of this assumption will, in real-world scenarioes, more often result in a false negative for this rule rather than a false positive.
+
 This rule assumes that all resources needed for rendering the page are properly loaded. Checking if resources are missing is out of the scope of rules. Missing resources may be rendered as text (for example, missing `img` are rendered as their `alt` attribute).
 
 ### Accessibility Support