After Jane Bowles' death, on 4 May 1973 in Malaga, Spain, Bowles continued to live in Tangier. He wrote regularly and received many visitors to his modest apartment.  In the summers of 1980 and 1982, Bowles conducted writing workshops in Morocco, at the American School of Tangier (under the auspices of the School of Visual Arts in New York). These were considered successful. Among several students who have become successful authors are Rodrigo Rey Rosa, the 2004 Winner of the Miguel Angel Asturias National Prize in Literature, and Mark Terrill. In addition, Bowles designated Rey Rosa as the literary heir of his and Jane Bowles' estates. In 1982 Bowles published Points in Time, subtitled Tales From Morocco, a collection of stories. Divided into eleven parts, the work consists of untitled story fragments, anecdotes, and travel narratives. These stories are not included in either The Stories of Paul Bowles (Ecco Press) or Collected Stories and Later Writings (The Library of America).  In 1985, Bowles published his translation of Jorge Luis Borges' short story, "The Circular Ruins". It was collected in a book of 16 stories, all translated by Bowles, called She Woke Me Up So I Killed Her. This Borges story had previously been published in translations by the three main Borges translators: Anthony Kerrigan, Anthony Bonner, and James E. Irby. Critics have noted the differences amongst these four translations. Bowles' version is in his typical prose style; it is readily distinguishable from the other three, which have a more conservative idiomatic form of translation.  In 1988, when Bowles was asked in an interview what his social life was like, he replied, "I don't know what a social life is... My social life is restricted to those who serve me and give me meals, and those who want to interview me." When asked in the same interview how he would summarize his achievement, he said, "I've written some books and some music. That's what I've achieved."  Bowles had a cameo appearance at the beginning and end of the film version of The Sheltering Sky (1990), directed by Bernardo Bertolucci. Bowles' music was overlooked and mostly forgotten for more than a generation, but in the 1990s, a new generation of American musicians and singers became interested in his work again. Art song enthusiasts savor what are described as "charming, witty pieces."  In 1994, Bowles was visited and interviewed by writer Paul Theroux, who featured him in his last chapter of his travel book, The Pillars of Hercules.

Answer this question "What did he do during the 1990s?" by extracting the answer from the text above.
Bowles had a cameo appearance at the beginning and end of the film version of The Sheltering Sky (1990),