# 1 Introduction

Reltool is a release management tool. It analyses a given Erlang/OTP installation and determines various dependencies between applications. The graphical frontend depicts the dependencies and enables interactive customization of a target system. The backend provides a batch interface for generation of customized target systems.

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1.1 Scope and Purpose

This manual describes the Reltool application, as a component of the Erlang/Open Telecom Platform development environment. It is assumed that the reader is familiar with the Erlang Development Environment, which is described in a separate User's Guide.

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1.2 Prerequisites

The following prerequisites are required for understanding the material in the Reltool User's Guide:

- familiarity with Erlang/OTP system principles and Erlang/OTP design principles

The application requires Erlang/OTP release R13B02 or later.

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1.3 About This Manual

In addition to this introductory chapter, the Reltool User's Guide contains the following chapters:

- Chapter 2: "Usage" describes the architecture and typical usage of the application.

- Chapter 3: "Examples" gives some usage examples

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1.4 Where to Find More Information

Refer to the following documentation for more information about Reltool and about the Erlang/OTP development system:

- the Reference Manual of Reltool

- the Erlang/OTP System Principles

- the Erlang/OTP Design Principles

- Programming Erlang: Software for a Concurrent World (2007), Pragmatic Bookshelf, ISBN13: 9781934356005.