Octave equivalent for get(gcf,'property')

[Labitt, Bruce]

I am trying to add a "super title" to an octave figure.  When I use
matlab, I can use the file suptitle.m.  (attached)

One of the first commands in suptitle is to get the default axes
fontsize, so things can be scaled.

Is there an equivalent in octave to the command

fs = get(gcf, 'defaultaxesfontsize');

I am using octave-3.0.1.

the error is:

error: get: invalid default property 'axesfontsize'

It appears get(gcf,'units'), get(gcf,'position') also do not work.  What
is a suggested work around, or am I on a fool's errand?

-Bruce

suptitle.m
Description: suptitle.m