# Contents

1. Purpose
2. Principle of work
3. Settings
3.1. The configuration file
3.2. Data sources
3.3. A current condition
3.4. Users
4. Filter
4.1. An example of the filter
4.2. The description of filter elements
4.3. Rules - "traps"
4.4. Debugging of the filter - "observer"
5. Reading of statistics
5.1. The Java-client
6. Outside interaction
6.1. Protocol
6.2. The network interface
6.3. The PIPE-interface