The Theravāda school is the only remaining school which is exclusively aligned with the philosophic outlook of the early schools. However, significant variation is found between the various Theravādin communities, usually concerning the strictness of practice of "vinaya" and the attitude one has towards "abhidhamma". Both of these, however, are aspects of the Vibhajjavādin recension of the "Tipiṭaka", and the variation between current Theravāda groups is mainly a reflection of accent or emphasis, not content of the "Tipiṭaka" or the commentaries. The "Tipiṭaka" of the Theravāda and the main body of its commentaries are believed to come from (or be heavily influenced by) the Sthaviravādins and especially the subsequent Vibhajjavādins.