How to save CAS functions (programs)?

[Alberto Candel]

Hi
I am having trouble figuring out the following. The new firmware allows to create CAS functions from the [New Program] (Shift 1 New). After input of name and check mark the CAS box, the following template is created
( ) -> BEGIN

END;

So I start writing a program. It seems that if I [check] and returns [no errors] then the program will show up in the list of [CAS Vars] and in the list of programs (appended with (cas)). But if for some reason I exit the program editor to do something else, the function that I was working on is nowhere to be found; title and typed contents are gone.

Is this how it works? How do I save my text, even if the program is not finished?

Thank you