Multiplot on Octave

I have recently installed octave from Synaptic on my Ubuntu box.

To my surprise, the multiplot methods (multiplot, mplot, etc.) are not present (in either octave-3.0 nor octave-3.2 packages).

Which package should I install to have these?

I've found packages such as octave-plplot have these functions, but for plplot or other libraries... I just want the gnuplot vanilla version...

Thanks in advance!