Why to use gobjects

While scanning through the last release notes, I discovered for R2013b the point:

Graphics

gobjects function for preallocating graphics handle array

The gobjects function creates an array of graphics handles. Use this function instead of the ones or zeros function when preallocating an array to store graphics handles.

Why should gobjects be used and what is the benefit from it? Documentation is not that helpful about this.

Thanks,

Alexander