Please also see Improving Thai Braille: Word Endlings
tha
This is the technical description of a DBT Translation table. If you want more general information about languages and template choices, please see the list of templates.
Initially, the language table for braille translation is determined by the selected template, and may be changed using the Document / Translation Tables menu. Using those menus does not require use of the table designator. However, to switch to a different translation table partway through a file, one must enter a DBT code and the designator for the table to switch to. For switching secondary languages within a base language table, see the [lng~X] command. For switching from one base language to another, see the [lnb~...] command.
The Thai tables support print-to-braille translation of Thai-language literary text into uncontracted Thai braille.
Uncontracted English is also supported. Technical (mathematics and computer) notation is generally transcribed as in Unified English Braille (UEB).
Braille-to-print translation is supported for this language. However, braille-to-print translation may not be perfect, therefore beware that errors can occur. If you find errors or have suggestions, please send both the *.dxb and *.dxp files along with an explanation to: languages@duxsys.com. Please be sure to include sample files!
Although DBT Win DBT 11.1 and later are able to display accented letter combinations and many non-Roman scripts, it is nevertheless often more convenient to use Microsoft Word for entering and editing print text, which can then be imported into DBT for subsequent translation. When preparing the text in Word, be sure to use a Unicode font (such as Lucida Sans or the default Times Roman), so that the underlying characters are encoded in Unicode. (Note that the appearance on screen is not the issue. Fonts that merely cause standard ASCII characters to be displayed as the desired accented or non-Roman letters will not work, because they will be imported according to their standard interpretation, not their appearance.)
True braille-to-print translation is not supported. This means that it is not generally useful to translate an Thai braille file to print. It also means that the "translated line" will typically contain gibberish when viewing the braille file. You may prefer to turn off the "translated line" under the View menu, or even under Global/Default if you wish it to be off by default.
Roman script is generally transcribed as in Unified English Braille (UEB).
There are no secondary languages supported within the Thai table itself; however it is possible to switch to any of the available translation tables listed in DBT. (See the [lnb~...] code below.)
Technical (mathematics, computer, or scientific) notation is generally transcribed as in Unified English Braille (UEB). It is also possible to switch to any of the available translation tables listed in DBT (see the [lnb~...] code below), many of which do support various technical codes, such as for mathematics or computer notation, or which support “unified” treatment of technical notation as well as literary text in the base language associated with the table.
The following DBT translation codes are available when using the Thai table. Codes related to the entry of type forms, mathematics, etc. as in the English/Unified tables may also be used and will generally be treated in the same way. Any other translation codes used will be ignored, or indeed may cause unexpected results. If using an alternative translation table, i.e when switching to another base language table by means of the[lnb~...] code, please refer to the relevant topic and available codes for that table.
[cz]
[lnb]
[lnb~...] (for switching to another base [primary] language table)
[tx]
The table is designed to work with the following groups of characters:
All ASCII printable characters
Thai letters and punctuation marks
Mathematical signs, shapes, etc. (DUSCI pages D+df..., D+e2..., D+e5..., D+ef..., D+f0..., D+f1...)
The above is a general guide only (see "General Notes" section under the main “Language Translation Tables” topic).
The Thai tables support print-to-braille translation of Thai-language literary text into uncontracted braille. It is based on matching the characters found in the Unicode standard with World Braille Useage, 1990 and The Wikipedia article on Thai Braille at en.wikipedia.org/wiki/Thai_Braille
We came into contact with Wiraman Niyomphol. He identified the countless times that the character ordering of Unicode conflicted with the character ordering of braille. These have been fixed in the present translator.
One major problem with the Thai translator is line endings. Thai braille does not use spaces to show word divisions. But without spaces, Duxbury DBT does not know how to divide lines into words. We await a solution to this issue. We welcome comments to improve these tables.
(Documentation reviewed June 2010)