I have found possibly unintentional differences and/or documentation errors or oversights involving the .stream~open and ~description methods.
F= .stream~new("c:\nonexistant.file”); F~open used to return "ERROR:2" (and is documented this way [beta 4702 p. 413]), but it now returns "ERROR:9" instead.
Similarly, ~description used to return "ERROR:2 No such file or directory", but now returns "ERROR:9 Bad file descriptor"
Documentation for ~description [p. 189] states that values returned are documented under ~state but ~state [p. 205] only documents basic information such as ERROR and NOTREADY but says nothing about "ERROR:9 Bad file descriptor" type messages.
Thank you, -Mark