content of binary files stored by save

[Francesco Potorti`]

>Does anybody know if file content can be listed?
>I mean, once I saved a file with "save" command, 
>I want to know what variables are stored in it.
>For example:
>
>a=2;
>b=4;

octave> save -binary context.dat a b

octave> fieldnames(load("context.dat"))
ans =

{
  [1,1] = a
  [2,1] = b
}

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