Dweezil Zappa is profitable—in 2016, it was "millions of dollars in debt"—and must seek permission from Ahmet, the trustee, to make money off of their father's music or merchandise bearing his name. Zappa received a cease-and-desist letter from the trust after he announced that he was being forced to perform his upcoming tour as "Dweezil Zappa Plays Frank Zappa" instead of using "Zappa Plays Zappa." In response to the trust’s action, he renamed his performance series "50 Years of Frank: Dweezil Zappa Plays Whatever the F@%k He Wants — the Cease and Desist Tour." Dweezil Zappa Dweezil Zappa (born Ian Donald Calvin
Digit (unit) one twelfth of the diameter of the sun or the moon. This is found in the Moralia of Plutarch, XII:23, but the definition as exactly one twelfth of the diameter may be due to Ptolemy. Sosigenes of Alexandria had observed in the 1st century AD that on a dioptra, a disc with a diameter of 11 or 12 digits (of length) was needed to cover the moon. The unit was used in Arab or Islamic astronomical works such as those of Ṣadr al‐Sharīʿa al‐Thānī (d.1346/7), where it is called "iṣba' ", digit or finger. The astronomical digit was in use