jgold, you need to read the rules in their entirety, not pick and choose certain words. The phrase you quoted actually states:
Code:
78N . 4. TRAVEL MUST BEGIN AND END THE THE SAME POINT
79N . EXCEPT ORIGIN-DESTINATION SURFACE PERMITTED AS
80N . FOLLOWS:
81N . * WITHIN COUNTRY OF ORIGIN
82N . * BETWEEN U.S.A-CANADA
83N . * WITHIN AFRICA
84N . * WITHIN THE MIDDLE EAST
85N . * BETWEEN HKG-CHINA
86N . * BETWEEN BANGLADESH-BKK/SIN
87N . * WITHIN SOUTH AMERICA
88N . * BETWEEN MALAYSIA-SIN
In other words, you must end the trip wherever you started it, unless it meets one of the above exceptions.
You can generally do an open jaw (surface segment) wherever you want except for across the oceans. Yes, the segments count against the 20, but, no, they don't count against the continent segment allocation.
Additionally, all flights must be on Oneworld metal. While I have no idea who Lan codeshares with out of Dakar, I can confidently say that it is in fact a codeshare and not with another oneworld carrier.
You absolutely cannot, under any circumstances, do a DONE3 out of Australia.