Zoom out in Octave / gnuplot

Question

I use Octave with gnuplot under Windows.

I can zoom in using the right mouse button. But how can I zoom out from the UI?

Answer 1

https://www.gnu.org/software/octave/doc/v4.0.1/Introduction-to-Plotting.html

I use graphics_toolkit ("fltk") to zoom plots for octave running on linux.