5. The Rule System

The rule system is a core part of GNU Anubis. It can be regarded as a program that is executed for every outgoing message.

Throughout this chapter, when showing syntax definitions, their optional parts will be enclosed in a pair of square brackets, e.g.:

keyword [optional-part] mandatory-part

When the square braces are required symbols, they will be marked as such, e.g.:

remove `['key`]'

The rule system is defined in the RULE section. The statements within this section are executed sequentially. Each statement is either an action or a conditional statement.

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