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Unicode is an international standard for the unique encoding of characters.
The standard allows the encoding and representation of almost all characters
from all languages of the world. While our Western European character set
gets by with only 255 different characters, Unicode defines more than 149000
characters for over 160 writing systems. This also includes the dot patterns
of Braille and special characters such as arithmetic symbols, pictograms,
musical notes or Emojis. Each character is assigned its own numerical code,
called a "code point". The resulting uniqueness of the characters
is important for the international exchange of data. For example, Braille
can be implemented independently of a specific Braille table by using Unicode.
In Unicode, the dot patterns occupy the code points U+2800 to U+28FF. And
because Unicode Braille characters are supported by screen readers for
the blind, the same dot patterns appear on a Braille display for every
reader.
Within the European Union, natural and legal persons have had the right
for years to have their names correctly reflected on documents. This applies
in particular to Greek, Cyrillic and diacritic characters. Diacritics are
used to determine the accent - the pronunciation and stress of a letter.
In the past, these accent letters were often represented only by their
basic letter. However, today's computer systems can easily process
all characters thanks to Unicode.
In order to standardize data processing within the European Union, the
DIN standard 91379 came into force on November 1, 2024. It defines 924
characters from the Unicode that are necessary for the processing and representation
of proper names. The standard is also known as String.Latin+ 1.2. It is
mandatory for all IT procedures that serve the cross-federal-state data
exchange or the exchange of data with citizens and companies in the EU.
Support for this standard makes Unicode accessible to all user groups for
creating accessible files. This can be experienced in many areas of RTFC
version 10.
Input Formats
Output formats
RTFC Braille Printer
RTFC's printer driver can handle files in Unicode Braille. On Braille
printers that support a binary table, this extends the character set to
all dot patterns except for the control characters for tabs, line and page
breaks.
RTFC Document Reader
The Microsoft Word reading program takes Unicode characters into account
and reads them correctly depending on the speech processor used. In the
case of files in Braille, the back-translated text is read aloud, otherwise
the respective dot patterns are announced in the context of the document.
RTFC Braille Keyboard
RTFC's Braille Keyboard allows you to enter Unicode Braille characters,
as long as your word processor supports it. You can set this by using the
"Unicode Braille for Braille input " option from the "Keyboard"
tab in the accessibility settings. These settings can be accessed via the
"Accessibility" button from the "General" tab in the program
options. In this way, sample texts in Braille can be easily entered in
Microsoft Word.
RTFC Braille Tags
Braille tags are control commands for Braille or daisy conversion, which
can also be used to define text and insert it into a document. Within a
text parameter, Unicode characters can be used if they are entered directly
in the source document after the Braille tag has been inserted into the
document.
Loadable Braille Tables for Computer Braille:
For the implementation of 8-dot Braille, external Braille tables can be
loaded. This allows you to assign one or more dot pattern to each character
- even for Unicode characters. This makes it possible to convert your documents
exactly as they appear on the Braille display. Or you can write your own
Braille table for a language that has not yet been developed.
The following table formats are supported:
The following tables are included:
You can define the table in the "Computer Braille table" drop-down
list in the "Computer Braille - Advanced Settings" dialog. You
can access the dialog via the "Advanced" button next to the drop-down
list for the output format.
TrueType fonts for computer braille simulation:
The new fonts "CDV Braille (ANSI)" and "CDV Braille Plus (ANSI)"
are necessary for clear representation of all 255 dot patterns of 8-dot
Braille. We provide these fonts free of charge with the kind permission
of Jean-Claude Thilges (CDV Luxembourg).
Latin Braille:
We have developed a new Braille module that takes a pragmatic approach
to translating Latin for both 6-dot Braille and 8-dot Braille. The implementation
is based on a proposal by Vivian Aldridge, member of the Braille Committee
of the German-speaking Countries (BSKDL).
The module allows the clear representation of long and short vowels (as
accented letters with macron and brevis), as well as frequently used ligatures
such as "AE", "OE", "SS" and "ET". Alternatively,
the vowels can also be written with circumflex for long vowels and acute
for short vowels, which makes it easier to enter on the PC keyboard.
Otherwise, the basic system including math Braille of German Braille applies.
The Latin module can be selected in the advanced options for the output
format with the language abbreviation "la". The language can also
be assigned to a font family and set via Braille tags (only for the Professional
Edition).
Italian Braille:
The new Braille module complies with the "Codice Braille italiano"
(Biblioteca Italiana per i Ciechi "Regina Margherita" - ONLUS 2017).
This set of rules was agreed in order to standardize and further develop
Italian Braille.
The module implements Italian Braille including simple mathematical expressions.
It helps with the conversion of Italian texts - also as a foreign language
in education for the blind.
The Italian module can be selected in the advanced options for the output
format with the language abbreviation "it". The language can also
be assigned to a font family and set via Braille tags (only for the Professional
Edition).
Improved PDF conversion:
For the import of PDF files, RTFC now uses the import filter of Microsoft
Word. The prerequisite for this is an installed version of Microsoft Word
from 2016 onwards.
Word has excellent support for tagged PDF files as well as PDF/A format.
Word also usually achieves good results for classic PDF documents that
contain text as graphics and require optical character recognition (OCR).
This allows PDF files to be converted to other formats in one step, with
most of the formatting being taken care of. Optionally, PDF files can also
be converted via RTFC's previous text import filter.
Improved accessibility check:
The accessibility report has been improved with regard to bulleted lists
and numbering, opening and closing quotes for verbatim speech, page numbers,
footnotes and endnotes, as well as the use of international character sets.
The accessibility checker supports you in publishing digital works by revealing
the potential for improvements in your documents before they are processed
into other formats.
Improved graphical interface:
Here we listened to our customers, who would like to see only few changes
in the operation of the program. so that you don't have to learn from
version to version.
We have made targeted changes only where there have been difficulties in
operation in the past. An example here is the selection of the main language
and foreign language for Braille conversion.
Support for current software environments:
RTFC can now also be used with the following products:
Further innovations and improvements within version 10 are in development.
These will be free for registered users of version 10.
Created: 2025/11/11 11:00 Updated: 2025/18/11 09:00
Author: Dipl.-Ing. (FH) W. Hubert Copyright © 2025 All rights reserved. |