Error return codes for commands

[OrangeAndBlue]

I've always had trouble finding what the error codes mean for various commands.

For instance, in the WriteLn and ReadLn commands, can we have all the various integers and their respective error reasons as part of the command reference?

What is the reason for WriteLn return value of '5'?

Thank you!

[Marcus Tettmar]

Error code 5 is access denied:
http://msdn.microsoft.com/en-gb/library ... s.85).aspx