Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.Clarion is a commercial, 4GL, object-oriented, programming language and Integrated Development Environment from SoftVelocity used to program database applications. It is compatible with ISAM, SQL and ADO data access methods, reads and writes several flat file desktop database formats including ASCII, CSV, DOS, FoxPro, Clipper, dBase, or all SQL RDBMS databases via ODBC, MS SQL Server, Sybase SQL_Anywhere and Oracle through the use of accelerated native database drivers, and XML, Clarion can be used to output to HTML, XML, plaintext, and PDF, among others. One of the Clarion Development Environment's primary features is its use of "templates" which are used in conjunction with a code generator to produce much of the repetitive, time consuming code that is typically required when producing an application. An "embeditor" shows the developer the code that will be generated and embed points where the developer can enter their own hand-code in the context of the template generated code. Advanced Clarion programmers can create their own templates, or edit the existing ones.