Based on and including Varadarāja's Laghusiddhāntakaumudī, and a portion of Bhaṭṭojī-Dikṣita's Siddhāntakaumudī. The former work is based on the latter, which is in turn a commentary on Pāṇini's Aṣṭādyāyī. In Sanskrit: introductory matter, commentary and notes in Hindi.