Dhauti is an important part of the Shatkarma (sometimes known as Shatkriya), the yogic system of body cleansing techniques. It is intended mainly to the cleaning of the digestive tract in its full length but it affects also the respiratory tract, external ears and eyes. According to Gheranda Samhita, it is divided into four parts: Antar (internal) dhauti, Danta (teeth) dhauti, Hrid (cardiac or chest region) dhauti and Moola shodhana (rectal cleansing).
Antar Dhauti is further divided into four parts: Vatsara, Varisara, Agnisara, Bahishkrit. Danta Dhauti: Danta Mula, Jivha Mula, Karna Randha, Kapola Randha. Hrid Dhauti: Danda Dhauti, Vaman Dhauti, Vastra Dhauti
References
Dhauti Wikipedia(Text) CC BY-SA