In AppleScript, what is the "ctxt" variable class? In trying to learn about data types in AppleScript, I referenced these web pages:

http://www.satimage.fr/software/en/smile/computing/as_types/as_data_types.html

http://macscripter.net/viewtopic.php?id=24695

However, when I return the class of some of my AppleScript variables, I am given the class of "ctxt". Obviously, "txt" is short for "text". But "ctxt" is not mentioned in the above guides.
ctxt maps to an NSString; an Objective-C Foundation.framework encoding of a string.


  NSString : Internally, Cocoa scripting always uses Unicode text when converting to get information from or add it to an Apple event.


You can find a reference to this type in Apple's Cocoa Scripting Guide.