Using as

This file is a user guide to the GNU assembler as version 2.15.

This document is distributed under the terms of the GNU Free Documentation License. A copy of the license is included in the section entitled "GNU Free Documentation License".

Overview: Overview
Invoking: Command-Line Options
Syntax: Syntax
Sections: Sections and Relocation
Symbols: Symbols
Expressions: Expressions
Pseudo Ops: Assembler Directives
Machine Dependencies: Machine Dependent Features
Reporting Bugs: Reporting Bugs
Acknowledgements: Who Did What
GNU Free Documentation License: GNU Free Documentation License
Index: Index