note in documentation about  to clarify that it means the ASCII space
@@ -884,8 +884,12 @@ scopes. Modifying the value of `@{EMPTY}` or `&{EMPTY}` is not possible.
.. note:: `&{EMPTY}` is new in Robot Framework 2.9.
+.. note:: `${SPACE}` represents the ASCII space (`\x20`) and `other spaces`__ should be specified using the `escape sequences`__.
+
__ Escaping_
__ https://groups.google.com/group/robotframework-users/browse_thread/thread/ccc9e1cd77870437/4577836fe946e7d5?lnk=gst&q=templates#4577836fe946e7d5
+__ http://jkorpela.fi/chars/spaces.html
+__ Escaping_
Automatic variables
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