Sorry, not seeing any 

prop: Toggle inclusion of property drawers, or list properties to include (‘org-export-with-properties’).

in 12.3 (online manual). Tried 

#+OPTIONS: prop:t

in my buffer and it didn't work either.

On Sun, May 17, 2015 at 7:08 PM, Thomas S. Dye <tsd@tsdye.com> wrote:
Lawrence Bottorff <borgauf@gmail.com> writes:

> Sorry, but I can't find any reference to org-export-with-properties . Where
> might it be mentioned?

See 12.3 Export settings,

,--------------------------------------------------------------------------------
| ‘prop:’     Toggle inclusion of property drawers, or list properties to include
|      (‘org-export-with-properties’).
`--------------------------------------------------------------------------------

hth,
Tom

--
Thomas S. Dye
http://www.tsdye.com