A grammatical mood used for statements of fact or reality; corresponds to the indicative mood in English and is contrasted with the subjunctive.
『彼は来る』という文は直説法の例だ。
The sentence 'He will come' is an example of the indicative mood.
文法書では直説法と仮定法の使い分けが説明されている。
Grammar books explain the distinction between the indicative and the subjunctive.