Xilinx UG4153 manual Preface About This Guide, Meaning or Use Example, File → Open, Helvetica bold

Preface: About This Guide

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Typographical

The following typographical conventions are used in this document:

Convention		Meaning or Use	Example
		Messages, prompts, and
Courier font		program files that the system	speed grade: - 100
		displays
Courier bold		Literal commands that you enter	ngdbuild design_name
		in a syntactical statement
		Commands that you select from	File → Open
Helvetica bold		a menu
		Keyboard shortcuts	Ctrl+C
		Variables in a syntax statement
		for which you must supply	ngdbuild design_name
		values
			See the Development System
Italic font		References to other manuals	Reference Guide for more
			information.
			If a wire is drawn so that it
		Emphasis in text	overlaps the pin of a symbol, the
			two nets are not connected.
		An optional entry or parameter.
Square brackets	[ ]	However, in bus specifications,	ngdbuild [option_name]
		such as bus[7:0], they are	design_name
		required.
Braces { }		A list of items from which you	lowpwr ={onoff}
		must choose one or more
Vertical bar		Separates items in a list of	lowpwr ={onoff}
		choices
Vertical ellipsis			IOB #1: Name = QOUT’
			IOB #2: Name = CLKIN’
.		Repetitive material that has
			.
.		been omitted
			.
.
			.
Horizontal ellipsis . . .		Repetitive material that has	allow block block_name loc1
		been omitted	loc2 ... locn;

Online Document

The following conventions are used in this document:

	Convention	Meaning or Use	Example
			See the section “Additional
	Blue text	Cross-reference link to a location	Resources” for details.
		in the current document	Refer to “Title Formats” in
			Chapter 1 for details.
10		www.xilinx.com	H.264 Motion Estimation Engine
			UG453 (v1.1) April 23, 2008