rectangle function undefined in octave -

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For some reason, nor Octave terminal, nor for example my editor recognize rectangular function, when I help command to extend the effort to get documentation through, then I get this: octave-3.2.4: 41> error with the help of the rectangle: Help: `text 'not found

I'm sure it There is an incredibly stupid error, but I can not find it. Everything is working fine.

I appreciate any help! Hannah


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