One of the Clarion Development Environment's primary features is its use of "templates" which are used in conjunction with a code generator (named AppGen) 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.