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Could you say what "terminator syntax style" is? I'm not finding any hits on popular search engines.

https://wiki.haskell.org/Terminator_vs._separator

Apropos of "finding the right exposition", consider this definition in the cited wiki article: Separator: There is a symbol between each element. The more carefully you read this the more it becomes nonsense. 1, "Each element" is an individual. You can't put something between an individual. 2 The defining sentence states a property of a representation of a sequence. It fails to indicate that "separator" is the symbol's role. In fact what's being defined is "separator notation", not the bare word "separator". The proper usage appears only later in the article. It should be employed throughout--most importantly in the title and the definition. The same goes for "terminator". Doug