freeswitch.orig vs freeswitch directory

[MrGlasspoole]

I wonder what the difference between the etc/freeswitch.orig vs etc/freeswitch directory is.

Main reason I'm asking is that i want to duplicate some FreeSwitch examples.
For Tetris i did:

tone_stream://path=/etc/freeswitch/tetris.ttml;loops=10

So i pointed to the freeswitch directory.
But maybe there is a better way (best practice) doing this?
Maybe to copy the files to another place?

Edit:
Just realized Tetris (*9198) is already there but it points to: /usr/conf/tetris.ttml

Was focused on
http://fusionpbx-docs.readthedocs.io/en/latest/additional_information/feature_codes.html
and did not notice the list is not complete.