Commentaries can be manifold in ancient India. They have different purposes and form, but they all share some characters:
- they have a given text as their main interlocutor/they are mainly about a given text
- like with Origene’s commentaries, they are a genre in its own right, not a minor specialisation for authors at their beginnings (Sakai 2015, section 4, suggests that authors in fact needed to have already become acknowledged authorities before being entrusted with the honour of composing a commentary on an influential text.)
- they are characterised by a varied but strong degree of textual reuse
- they allow for significant degrees of innovation (This is evident in the case of the Navya Nyāya commentaries on the NS. Outside the precinct of philosophy, juridical commentaries often reflect the recent juridical developments much more than the original text they are commenting upon.)