hints for set() command tags

[Petr Mikulik]

> > > > imagesc(1./hilb(9)); h=colorbar;
> > > > set(h,'yscale')
> > > error: set: invalid number of arguments
> > >
> > >vs.
> > > > > imagesc(1./hilb(9)); h=colorbar;
> > > > > set(h, 'yscale')
> > > [ {linear} | log ]
> > >
> > >This help message would be very welcome in order to actually know which
> > >options one can set.
> > >
> > >It seems there is no documentation for various "set", right?
> >
> >Given the new drawing infrastructure in Octave, the missing documentation
> >for various options/tags in set command seems to be an important issue.
> >Unless people are skilled in Matlab, they cannot figure which options to use
> >in set(). Could Octave write the list of possible options (radio buttons)
> >instead of an error message? That would be a great help!
> 
> Doesn't get(h) produce a list?

That's a different list (all tags, not options of one tag).

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