typeinfo

[Ernst Reissner]

Hi all,
i am about to resurrect javaoctave, software to access octave from
within java
(a feature also matlab offers).
One task is to provide a means to initialize a variable with any kind of
octave object.
I found here the command typeinfo which offers seemingly all types to be
considered.

What makes me feel uncomfortable is what help typeinfo displays:
     If EXPR is omitted, return a cell array of strings containing all
     the currently installed data types.
What does mean currently installed data types?
Does this list depend solely on the octave version
or is there a way to install more types on a given octave version?

Thank you for helping.

Greetings,

Ernst