Thank you for the answer Andreas! Yes, that is what I meant, the functions that are included in the Octave interpreter. I just taught that the interpreter loads some libraries for him self when I start Octave, that's why I used the _expression_ libraries.
I included the help mailing list in this post, but I didn't fully understood what you meant with "do not top post with following quote bellow". I just deleted all the quotes so you won't have any problems.
Thanks for the Help! I wish you a nice Wednesday morning.
King regards,
Luka Kurnjek