10 www.xilinx.com H.264 Motion Estimation Engine
UG453 (v1.1) April 23, 2008

Preface: About This Guide

R
Typographical

The following typographical conventions are used in this document:

Online Document

The following conventions are used in this document:

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