Originally Posted by
pandaperth
...Must admit I've never understood the meaning of or grasped any significance of the word
via in the rule "For travel to/from or
via Ghana, Nigeria, Kenya, Uganda and Tanzania". The word has always appeared superfluous to me.

To me it means that the listed countries can be the origin (from) or destination (to) or simply part (via) of the overall OWE itinerary. Without the 'via' it could be construed that the rule applies only to origin/destination.