(By Matthew S. Dryer): "This map shows the position of adverbial subordinators, morphemes which mark adverbial clauses for their semantic relationship to the main clause. Adverbial subordinators which are separate words are referred to as subordinating conjunctions by traditional grammar. Examples of adverbial subordinators in English include because, although, when, while, and if. The map further distinguishes adverbial subordinators which are separate words from ones which are affixes on verbs."