Question: The API type of ExtenXLS is also known as what in computer science jargon?

Context paragraphs:
Stockdale High School (Bakersfield, California): Stockdale High School (SHS or StHS) is an American senior high school located in Bakersfield, California.  Its athletics teams are known as the Stockdale Mustangs and the school colors are black and silver.  Stockdale High School first opened in 1991.  Now in its 25th year, with approximately 2,069 students enrolled, has an API of 831, and has earned a reputation in the community and around the state as a school that meets the needs of all students.  Sixty-four sections of GATE, Honors, and Advanced Placement classes are offered for the college-bound.  For students interested in career pathways, eight courses are offered, including Agricultural Science and Technology, Applied Engineering and Design, Computer and Commercial Graphics, Computer Science and Information Systems, Accounting and Finance, Medicine (M.A.S.H., the Medical Academy of Stockdale High), Virtual Business Enterprise, and Construction Technology.  The school motto is "Branded by Excellence."  In 2010, "Newsweek" ranked Stockdale among the top 6 percent of all public schools in the United States.

Peter Gutmann (computer scientist): Peter Claus Gutmann is a computer scientist in the Department of Computer Science at the University of Auckland, Auckland, New Zealand.  He has a Ph.D. in computer science from the University of Auckland.  His Ph.D. thesis and a book based on the thesis were about a cryptographic security architecture.  He is interested in computer security issues, including security architecture, security usability (or more precisely the lack thereof), and hardware security, he has discovered assorted flaws in publicly released cryptosystems and protocols.  He is the developer of the cryptlib open source software security library and contributed to PGP version 2.  In 1994 he developed the Secure FileSystem (SFS).  He is also known for his analysis of data deletion on electronic memory media, magnetic and otherwise, and devised the Gutmann method for erasing data from a hard drive more or less securely.  Having lived in New Zealand for some time, he has written on such subjects as wetas, which are peculiar to New Zealand, and the Auckland power crisis of 1998, during which the electrical power system failed completely in the central city for five weeks.  See, for instance, "Auckland: Your Y2K beta test site" on Gutmann's Homepage.  He has also written on his career as an "arms courier" for New Zealand, detailing the difficulty faced in complying with customs control regulations with respect to cryptographic products, which were once classed as "munitions" by various jurisdictions including the United States.

Space-cadet keyboard: The space-cadet keyboard is a keyboard used on MIT Lisp machines and designed by Tom Knight, which inspired several still-current jargon terms in the field of computer science and influenced the design of Emacs.  It was inspired by the Knight keyboard (also developed by Tom Knight), which was developed for the Knight TV system, used with MIT's Incompatible Timesharing System.

Owen Astrachan: Owen Astrachan is an American computer scientist and professor of the Practice of Computer Science at Duke University where he is also the department's Director of Undergraduate Studies.  He is known for his work in curriculum development and methods of teaching computer science.  He was one of the first National Science Foundation CISE Distinguished Education Fellows, and is a recipient of the ACM Outstanding Educator Award.  He was the principal investigator on the multi-year NSF/College Board project that led to the release of the AP Computer Science Principles course and exam.

Zdzisław Pawlak: Zdzislaw I. Pawlak (10 November 1926 – 7 April 2006) was a Polish mathematician and computer scientist.  He was affiliated with several organization, including Polish Academy of Sciences and Warsaw School of Information Technology.  He served as the Director of the Institute of Computer Science at the Warsaw University of Technology (1989–96).  Pawlak was known for his contribution to many branches of theoretical computer science.  He was credited with introducing the rough set theory and also known for his fundamental works on it.  He had also introduced the Pawlak flow graphs, a graphical framework for reasoning from data.  He was conferred with Order of Polonia Restituta in 1999.  He was a full member of Polish Academy of Sciences.

Kind (type theory): In the area of mathematical logic and computer science known as type theory, a kind is the type of a type constructor or, less commonly, the type of a higher-order type operator.  A kind system is essentially a simply typed lambda calculus "one level up", endowed with a primitive type, denoted formula_1 and called "type", which is the kind of any data type which does not need any type parameters.

Roger R. Schell: Roger R. Schell is President of ÆSec, a company focused on appliances built on hardened platforms for secure, reliable e-business on the Internet.  For several years he managed the development and delivery of security for several Novell releases of network software products including an integral PKI, an international crypto API, and an authentication service with exposed SSL capability.  Dr. Schell was co-founder and Vice President for Engineering of Gemini Computers, Inc., where he directed development of Gemini's Class A1 network processor commercial product.  He was also the founding Deputy Director of the (now) National Computer Security Center.  Previously he was an Associate Professor of Computer Science at the Naval Postgraduate School.

Report: A report or account is any informational work (usually of writing, speech, television, or film) made with the specific intention of relaying information or recounting certain events in a widely presentable form.

UNSW School of Computer Science and Engineering: The UNSW School of Computer Science and Engineering (CSE), also known as UNSW COMPUTING, is part of the UNSW Faculty of Engineering and was founded in 1991 out of the former Department of Computer Science within the School of Electrical Engineering and Computer Science.  It is now one of the largest Schools of its kind in Australia.  The academic staff have research focus in areas such as Artificial Intelligence, Databases, Embedded Systems and Operating Systems, Networks, Programming Languages, Service Oriented Computing, Software Engineering and Computability Theory.

ExtenXLS: ExtenXLS is a Java Excel Reporting Toolkit developed by Extentech.  It is a Reporting API that allows for the reading in, modifying and creation of spreadsheet-based reports from Java applications.

Supporting paragraphs: ExtenXLS Report
Answer: account