The Dhatupatha is PaniniIs library of Sounds that serves as an input to the Ashtadhyayi program. Its intelligent, concise and exemplary coding is regarded in awe by the foremost programmers of today and has stood its ground over 2500 years. Many Dhatupathas are available, and the source is usually an edition of the Siddhanta Kaumudi of Bhattoji Dikshita circa 17th century. A book that is error free, legible and easily understandable is the aim here. Roots are numbered with a unique Dhatu Serial Number from 1 to 1943. A standard edition is often peppered with footnotes. These comments have been clarified to facilitate learning and teaching for the modern Reader. Apart from Dhatu Sutras, the major Ganasutras have been enumerated. Internal grouping of Roots is well established. Relevant Ashtadhyayi Sutra is often listed. Lucid Indexes make locating any Root precise and convenient. Very useful for stepping into the intricacies of Sanskrit Grammar.