Question: What is the commonly known name of the charter written by a Swiss-French political activist in 1815?
Context: This is a chart of stringed instrument tunings.  Instruments are listed alphabetically by their most commonly known name. Henri-Benjamin Constant de Rebecque (] ; 25 October 1767 – 8 December 1830), or simply Benjamin Constant, was a Swiss-French political activist and writer on politics and religion.  He was the author of a partly biographical psychological novel, "Adolphe".  He was a fervent liberal of the early 19th century, who influenced the Trienio Liberal movement in Spain, the Liberal Revolution of 1820 in Portugal, the Greek War of Independence, the November Uprising in Poland, the Belgian Revolution, and Liberalism in Brazil and Mexico. Israel Bonds is the commonly known name of Development Corporation for Israel (DCI), the U.S. underwriter of debt securities (Israel bonds) issued by the government of Israel.  DCI is headquartered in New York City, and is a broker-dealer and member of the Financial Industry Regulatory Authority (FINRA).  Israel Maimon became the organization's president & CEO in October 2016. Van lettering is the commonly known name for van livery.  It involves the process of applying vinyl substrates to a van for the primary purposes of advertising or brand awareness. 291 is the commonly known name for an internationally famous art gallery that was located in Midtown Manhattan at 291 Fifth Avenue in New York City from 1905 to 1917.  Originally known as the "Little Galleries of the Photo-Secession", the gallery was created and managed by photographer Alfred Stieglitz. The Charter of 1815, signed on April 22, 1815, was the French constitution prepared by Benjamin Constant at the request of Napoleon I when he returned from exile on Elba.  More correctly known as the "Additional Act to the Constitutions of the Empire" the document extensively amended (in fact virtually replacing) the previous Napoleonic Constitutions (Constitution of the Year VIII, Constitution of the Year X and Constitution of the Year XII).  The Additional Act reframed the Napoleonic constitution into something more along the lines of the Bourbon Restoration Charter of 1814 of Louis XVIII, while otherwise ignoring the Bourbon charter's existence.  It was very liberal in spirit, and gave the French people rights which had previously been unknown to them, such as the right to elect the mayor in communes of less than 5,000 in population.  Napoleon treated it as a mere continuation of the previous constitutions, and it therefore took the form of an ordinary legislative act "additional to the constitutions of the Empire". "The Lincolnshire Poacher" was a powerful shortwave numbers station that transmitted from Cyprus from the mid-1970s to June 2008.  The station gained its commonly known name as it uses bars from the English folk song "The Lincolnshire Poacher" as an interval signal.  The radio station was believed to be operated by the British Secret Intelligence Service and emanated from the island of Cyprus.  Amateur direction finding linked it with the Royal Air Force base at Akrotiri, Cyprus, where several curtain antennas had been identified as being its transmitter.  It consisted of an electronically synthesised English-accented female voice reading groups of five numbers: e.g. '0-2-5-8-8'.  The final number in each group was spoken at a higher pitch.  It is likely that the station was used to communicate to undercover agents (spies) operating in other countries, to be decoded using a one-time pad. Psychotronic Video was a film magazine originally started by publisher/editor Michael J. Weldon in 1980 in New York City as a hand-written and photocopied weekly fanzine entitled Psychotronic TV.  It was then relaunched by Weldon under its more commonly known name as an offset quarterly in 1989.  Both versions of the magazine covered what Weldon dubbed "Psychotronic Movies", which he defined as "the ones traditionally ignored or ridiculed by mainstream critics at the time of their release: horror, exploitation, action, science fiction, and movies that used to play in drive-ins or inner city grindhouses." Weldon coined the term after being inspired by "The Psychotronic Man" (1980), a low budget science fiction obscurity. Wat Pho (Thai: วัดโพธิ์ ,  ] ), also spelt Wat Po, is a Buddhist temple complex in the Phra Nakhon District, Bangkok, Thailand.  It is on Rattanakosin Island, directly south of the Grand Palace.  Known also as the Temple of the Reclining Buddha, its official name is Wat Phra Chetuphon Vimolmangklararm Rajwaramahaviharn (Thai: วัดพระเชตุพนวิมลมังคลารามราชวรมหาวิหาร ; ;  ] ).  The more commonly known name, Wat Pho, is a contraction of its older name Wat Photaram (Thai: วัดโพธาราม ; ). Mīrzā Muhammad Tāraghay bin Shāhrukh (Chagatai: میرزا محمد طارق بن شاہ رخ , Persian: میرزا محمد تراغای بن شاہ رخ‎ ‎ ), better known as Ulugh Beg () (March 22, 1394 in Sultaniyeh, Persia – October 27, 1449, Samarkand), was a Timurid ruler as well as an astronomer, mathematician and sultan.  His commonly known name is not truly a personal name, but rather a moniker, which can be loosely translated as "Great Ruler" or "Patriarch Ruler" and was the Turkic equivalent of Timur's Perso-Arabic title "Amīr-e Kabīr".  His real name was "Mīrzā Mohammad Tāraghay bin Shāhrukh".  Ulugh Beg was also notable for his work in astronomy-related mathematics, such as trigonometry and spherical geometry.  He built the great Ulugh Beg Observatory in Samarkand between 1424 and 1429.  It was considered by scholars to have been one of the finest observatories in the Islamic world at the time and the largest in Central Asia.  He built the Ulugh Beg Madrasah (1417–1420) in Samarkand and Bukhara, transforming the cities into cultural centers of learning in Central Asia.  He was also a mathematician of the 15th century — albeit his mental aptitude was perseverance rather than any unusual endowment of intellect.  His observatory is situated in Samarkand which is in Uzbekistan.  He ruled Uzbekistan, Tajikistan, Turkmenistan, Kyrgyzstan, southern Kazakhstan and most of Afghanistan from 1411 to 1449.
Answer: Additional Act to the Constitutions of the Empire