Update README.md

rozek · Jul 24, 2024 · 8bb5032 · 8bb5032
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@@ -98,6 +98,8 @@ Besides common blocks which can be found in many Blockly environments, the "bloc
 
 ![ContextKeys](./Screenshots/isEnabled.png)
 
+returns `true` if an UI element with the given key (exists and) is enabled. If no element with the given key can be found, an exception is thrown and the program aborted.
+
 ### AI Basics ###
 
 (t.b.w.)