NRSI: Computers & Writing Systems
Dai Banna SIL Fonts
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Dai Banna SIL is a Unicode font package for rendering New Tai Lue (Xishuangbanna Dai) characters.1 It includes a complete set of New Tai Lue consonants, vowels, tones, and digits, along with punctuation and other useful symbols. A basic set of Latin glyphs, including Arabic numerals, is also provided. Apart from a few New Tai Lue characters and Chinese punctuation marks, the design is the same as its predecessor, SIL Dai Banna Fonts. Two font families, differing only in weight, allow for a wide range of uses.
The New Tai Lue script is used by approximately 300,000 people who speak the Xishuangbanna Dai language in Yunnan, China. It is a simplification of the Tai Tham (Old Tai Lue) script as used for this language for hundreds of years.
We particularly thank the Dai News Department of Xishuangbanna Daily for valuable advice during the development of this Unicode font package. Xishuangbanna Daily, established since 1957, is the largest newspaper company in Yunnan, China that publishes in the New Tai Lue script.
The Dai Banna SIL fonts are designed to work on operating systems that provide support for TrueType fonts and for Unicode character encoding. This includes Microsoft Windows® 9x or greater, Mac OS version 9.0 and later, and some implementations of Unix / Linux. (TrueType font support on Unix and Linux may depend upon the particular applications in use.)
The above only describes the minimum needed to display characters. For the fonts to work properly in applications, additional requirements must be met. This release of the fonts is designed to work with Graphite, a smart font technology that enables the visual reordering of four vowels to the left of the base consonant:
Visual reordering is required to display them properly in relation to the base consonant because, according to the Unicode Standard, the New Tai Lue script is encoded after a logical ordering, i.e., consonants are always stored before vowels. Without visual reordering, the above four vowels will be displayed after the base consonant, which is incorrect according to standard usage of the script.
Graphite also allows smart line breaking that limits break opportunities to between syllables only. This is useful because intersyllabic space is optional in New Tai Lue text, and without space marking syllable boundaries, standard applications will just break the line whenever it is full, likely splitting up a syllable, which is undesirable as per standard script usage.
To correctly render a run of text with reordrant vowels and no intersyllabic space, you must be using applications and/or operating systems that provide an adequate level of support for Graphite.2 Tested applications / operating systems which make use of the Graphite capabilities of the fonts include:
More information on Graphite technology and related applications is available at Graphite.
Dai Banna SIL is released under the SIL Open Font License (OFL) - please read it carefully and do not download the font unless you agree to the terms of the license.
Copyright (c) 1998-2011 SIL International ( http://www.sil.org/), with Reserved Font Name "SIL".
This license is copied below, and is also available with a FAQ at http://scripts.sil.org/OFL.
SIL OPEN FONT LICENSE
Version 1.1 - 26 February 2007
The goals of the Open Font License (OFL) are to stimulate worldwide development of collaborative font projects, to support the font creation efforts of academic and linguistic communities, and to provide a free and open framework in which fonts may be shared and improved in partnership with others.
The OFL allows the licensed fonts to be used, studied, modified and redistributed freely as long as they are not sold by themselves. The fonts, including any derivative works, can be bundled, embedded, redistributed and/or sold with any software provided that any reserved names are not used by derivative works. The fonts and derivatives, however, cannot be released under any other type of license. The requirement for fonts to remain under this license does not apply to any document created using the fonts or their derivatives.
"Font Software" refers to the set of files released by the Copyright Holder(s) under this license and clearly marked as such. This may include source files, build scripts and documentation.
"Reserved Font Name" refers to any names specified as such after the copyright statement(s).
"Original Version" refers to the collection of Font Software components as distributed by the Copyright Holder(s).
"Modified Version" refers to any derivative made by adding to, deleting, or substituting — in part or in whole — any of the components of the Original Version, by changing formats or by porting the Font Software to a new environment.
"Author" refers to any designer, engineer, programmer, technical writer or other person who contributed to the Font Software.
PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining a copy of the Font Software, to use, study, copy, merge, embed, modify, redistribute, and sell modified and unmodified copies of the Font Software, subject to the following conditions:
1) Neither the Font Software nor any of its individual components, in Original or Modified Versions, may be sold by itself.
2) Original or Modified Versions of the Font Software may be bundled, redistributed and/or sold with any software, provided that each copy contains the above copyright notice and this license. These can be included either as stand-alone text files, human-readable headers or in the appropriate machine-readable metadata fields within text or binary files as long as those fields can be easily viewed by the user.
3) No Modified Version of the Font Software may use the Reserved Font Name(s) unless explicit written permission is granted by the corresponding Copyright Holder. This restriction only applies to the primary font name as presented to the users.
4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font Software shall not be used to promote, endorse or advertise any Modified Version, except to acknowledge the contribution(s) of the Copyright Holder(s) and the Author(s) or with their explicit written permission.
5) The Font Software, modified or unmodified, in part or in whole, must be distributed entirely under this license, and must not be distributed under any other license. The requirement for fonts to remain under this license does not apply to any document created using the Font Software.
This license becomes null and void if any of the above conditions are not met.
THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM OTHER DEALINGS IN THE FONT SOFTWARE.
Download and Installation
Dai Banna SIL 2.200 (official release)
This official release includes the following changes:
Dai Banna SIL 2.1 (official release) (Version 2.001)
This official release includes the following changes which reflect amendments made to ISO 10646:2003 in April 2008:
Dai Banna SIL 2.0 (public beta)
This version supports Unicode 5.0.
This beta release includes the following changes:
As these fonts and utilities are distributed at no cost, we are unable to provide a commercial level of personal technical support. We will, however, try to resolve problems that are reported to us.
We do hope that you will report problems so they can be addressed in future releases. Even if you are not having any specific problems, but have an idea on how this system could be improved, we want to hear your ideas and suggestions.
Please note that these fonts are intended for use by experienced computer users. Installing and using these fonts is not a trivial matter. The most effective technical support is usually provided by an experienced computer user who can personally sit down with you at your computer to troubleshoot the problem.
General troubleshooting information, including frequently asked questions, can be found in the documentation. Additional information is also available on the general Font FAQ page. If that fails to answer your question you can contact us at:
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reserved, unless otherwise noted elsewhere on this page.