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+---
+title: Preface
+prev: books/accessibility
+next: books/accessibility/parti
+description: Preface on assistive technologies available on FreeBSD
+tags: ["preface"]
+showBookMenu: true
+weight: 1
+params:
+ path: "/books/accessibility/preface/"
+---
+
+[preface]
+[[a11y-preface]]
+= Preface
+:doctype: book
+:toc: macro
+:toclevels: 1
+:icons: font
+:source-highlighter: rouge
+:experimental:
+:images-path: books/accessibility/
+
+ifdef::env-beastie[]
+ifdef::backend-html5[]
+:imagesdir: ../../../../images/{images-path}
+endif::[]
+ifndef::book[]
+include::shared/authors.adoc[]
+include::shared/mirrors.adoc[]
+include::shared/releases.adoc[]
+include::shared/attributes/attributes-{{% lang %}}.adoc[]
+include::shared/{{% lang %}}/teams.adoc[]
+include::shared/{{% lang %}}/mailing-lists.adoc[]
+include::shared/{{% lang %}}/urls.adoc[]
+toc::[]
+endif::[]
+ifdef::backend-pdf,backend-epub3[]
+include::../../../../../shared/asciidoctor.adoc[]
+endif::[]
+endif::[]
+
+ifndef::env-beastie[]
+toc::[]
+include::../../../../../shared/asciidoctor.adoc[]
+endif::[]
+
+[[intended-audience]]
+== Intended Audience
+
+This handbook is intended for anyone interested in the assistive technologies available in the FreeBSD operating system.
+Users and administrators can learn how to configure the system for accessibility.
+Developers will find resources and guidance to help them create, improve, and test accessible software.
+
+[[organization-book]]
+== Organization of this Book
+
+This book is organized into sections, chapters, and paragraphs, all of which can be read independently and out of order.
+The first section, _crossref:parti[parti-general,Part I. General]_, provides guidance on how to seek help and includes various miscellaneous topics.
+The second section, _crossref:partii[partii-vision,Part II. Vision]_, focuses on assistive technologies for visual accessibility;
+It is intentionally free of images to maximize accessibility
+All sections and chapters are self-contained and can be read in any order.
+
+Chapters:
+
+_crossref:help[help,Help]_::
+Explains where and how to seek support within the FreeBSD community.
+
+_crossref:virtual-terminal[virtual-terminal,Virtual Terminal]_::
+Highlights features of the system's virtual console for visual accessibility.
+
+_crossref:colors[colors,Colors]_::
+Describes how to customize color settings in graphical environments for better visibility.
+
+_crossref:lowvision[lowvision,Low Vision]_::
+Introduces tools and settings for users with low vision.
+
+_crossref:blindness[blindness,Blindness]_::
+Covers accessibility tools and configurations for blind users, including screen readers, text-based utilities, and relevant ports.
+
+_crossref:development[development,Development]_::
+Offers guidelines and resources for developers to enhance accessibility for users with visual impairments.
+
+[[commands]]
+== Commands
+
+FreeBSD offers a powerful command line interface that enables users to execute a wide range of text commands to set up and use the operating system.
+This Handbook, like all official FreeBSD documentation, follows these command prompt conventions:
+
+- A command preceded by `%` can be executed by any regular user.
+- A command preceded by `#` must be executed by the `root` user (the system administrator).
+