A documentation generator is a programming tool that generates software documentation intended for programmers (API documentation) or end users (End-user Guide), or both, from a set of specially commented source code files, and in some cases, binary files.Document generation can be divided in several type of documents: Batch documents (all automated documents) Interactive documents (documents that can not be produced automatically) Text block correspondence (documents created based on pre-defined text blocks) Forms (forms for websites)You can place every type of document you come across in one of these categories.A lot of software solutions are offered on the Internet that can automate these processes.In particular, some integrated development environmentsprovide interactive access to documentation, code metadata, etc.