Passing Large Arrays to Function

[Thomas D. Dean]

It looks like octave makes a copy of an array when passing it to a 
function.  At least modifying an array within a function does not change 
the external array unless it is defined as global.

Defining a variable global over several (many?) functions is a shortcut 
to disaster.

Is there a way to pass an array by reference so modifications within a 
function change the external array?

Tom Dean