[2.8.4, Mac OS 10.4.9] Demos source confusion

[David.L.Goldsmith at noaa.gov]

Hi!  I have built versions of the demos (2.8.4, Mac OS 10.4.9) but no
source code for them and no recollection of having deleted the source;
are these installed from binary w/out the source for Mac installs, or
must I have had the source at some point and am simply spacing on having
deleted them (I also have no idea why I would have done that, which
strengthens my suspicion that I didn't, but then how can I have built them)?

Confused,

DG