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diff --git a/doc/classes/JSON.xml b/doc/classes/JSON.xml
index 38ddca2727..125d016632 100644
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@@ -28,6 +28,11 @@
[codeblock]
var data = JSON.parse_string(json_string) # Returns null if parsing failed.
[/codeblock]
+ [b]Note:[/b] Both parse methods do not fully comply with the JSON specification:
+ - Trailing commas in arrays or objects are ignored, instead of causing a parser error.
+ - New line and tab characters are accepted in string literals, and are treated like their corresponding escape sequences [code]\n[/code] and [code]\t[/code].
+ - Numbers are parsed using [method String.to_float] which is generally more lax than the JSON specification.
+ - Certain errors, such as invalid Unicode sequences, do not cause a parser error. Instead, the string is cleansed and an error is logged to the console.
</description>
<tutorials>
</tutorials>