Saxon is subject to Conditions of Use, available at http://saxon.sourceforge.net/saxon6.5.3/conditions.html and copied to the file tools/saxon/LICENSE_Saxon.html.
Xerces:
The eAIP package includes software developed by the Apache Software Foundation (http://www.apache.org/), namely Xerces, an XML parser.
Its license is available in the file tools/xerces/License.
Schematron:
The eAIP package includes the Schematron 1.5 tools, which are copyrighted by David Calisle, Oliver Becker, Rick Jelliffe and Academia Sinica Computing Center, Taiwan. These tools were slightly modified by Benoit Maisonny for the eAIP. The original versions are available at http://www.ascc.net/xml/resource/schematron/.
The licence is located at the top of each file in the directory tools/schematron.
OpenSSL:
This product (the eAIP package) includes software developed by the OpenSSL
Project for use in the OpenSSL Toolkit. (http://www.openssl.org/)
Copyright (c) 1998-2003 The OpenSSL Project. All rights reserved.
The whole OpenSSL distribution, including documentation and source code,
is available at this Web site. Only the binaries are included in the eAIP
package.
Its license is available in the file tools/OpenSSL/License.
GnuPG:
The eAIP package includes the GnuPG software, which is Copyright 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. The whole GnuPG distribution, including documentation and source code, is available at http://www.gnupg.org/, and also on the eAIP Web site. Only the binaries are included in the eAIP package.
Its license is available in the file tools/GnuPG/Copying.
Chapter 4. User Requirements and Usability Guidelines
4.1. Introduction
Paper and screen are two different presentation media. For example, the concept of fixed length pages does not apply to the screen. It is much more natural to group the information in chapters, per subject. Also, when expressed in pixels, a good computer screen has half the size of an A4 paper. For the text to remain readable, the length of a text in a table cell has to be reduced at least by one third.
Presenting the information on screen has different constraints from presenting the same in-formation on paper. XML and HTML are Web technologies, developed specifically with the aim to make information available on computer screens. The on-screen (HTML) presentation part of the eAIP Specification is based on the conclusions of a User Requirements and Usab-
ility Guidelines [usability_study.pdf], performed under contract for EUROCONTROL by Helios Technology, UK. The study included a validation workshop with a group of real users.
4.2. User requirements
The requirements identified through this study have been characterised as ‘inherited’ require-ments or ‘functional’ requirements:
.
inherited requirements are those deriving from the ICAO SARPS specified in Annex 15, such as:
.
the eAIP structure and layout must adhere to the requirements for presentation as set out by ICAO;
.
the update cycle of the eAIP must adhere to the AIRAC cycle requirements;
.
all Amendments (alterations, additions and deletions) made to the eAIP in the last AIRAC cycle must be indicated.
.
functional requirements are those deriving from the transition from paper-based to elec-tronic media, such as:
.
the Table of Contents is the main navigation tool into the eAIP document; it must be simple, fast and effective to use;
. 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：Electronic AIP Specification(11)
