  In the mid-1990s, two groups of authors independently obtained
classifications of vertex-transitive graphs whose order is a product of two
distinct primes. In the intervening years it has become clear that there is
additional information concerning these graphs that would be useful, as well as
making explicit the extensions of these results to digraphs. Additionally,
there are several small errors in some of the papers that were involved in this
classification. The purpose of this paper is to fill in the missing information
as well as correct all known errors.
