Adding a little support, from Joe Armstrong's thesis (which I've been reading): "This version of Erlang was embedded in Prolog using Prolog infix operators and

Adding a little support, from Joe Armstrong's thesis (which I've been reading): "This version of Erlang was embedded in Prolog using Prolog infix operators and did not yet have its own syntax." "Since Erlang started as an extension to Prolog it seemed reasonable that [...]" "Erlang now had its own syntax (up to now it could be regarded as a dialect of Prolog) and could be regarded as a language in its own right, rather than as a dialect of Prolog."