updated README.md

[OldStandard] / README.md

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@@ -3,20 +3,52 @@ Old Standard T
 
 License
 -------
-Copyright (c) 2006-2011 Alexey Kryukov <amkryukov@gmail.com>,
+Copyright (c) 2006-2011 Alexey Kryukov (<amkryukov@gmail.com>),
 without Reserved Font Names.
 
 Copyright (c) 2019, Robert Alessi (<alessi@robertalessi.net>),
 without Reserved Font Names.
 
-This Font Software is licensed under the SIL Open Font License, Version 1.1.
-This license is copied below, and is also available with a FAQ at:
-http://scripts.sil.org/OFL
+This Font Software is licensed under the SIL Open Font License,
+Version 1.1.  This license is available with a FAQ at:
+<http://scripts.sil.org/OFL>
 
 History
 -------
-This font is just the same as Alexey Kryukov's beautiful Old Standard.[^1]
+This font is just the same as Alexey Kryukov's beautiful *Old
+Standard*.[^1] In comparison to *Old Standard*, *Old Standard T*
+includes new letters and some corrections:
 
-Notes
------
-[^1]: https://github.com/akryukov/oldstand
+1. Small capitals for Roman, Greek and Cyrillic letters, in all three
+   styles, Regular, Italic and Bold have been added. Small capitals,
+   which are missing from *Old Standard*, were already in use a
+   century ago in fine books which used font faces very similar to
+   *Old Standard*. Typical use cases of small capitals were headers,
+   current headings and in some books proper names.
+2. The letter G with caron above, that is: Ǧ (`U+01E6`, uppercase) and
+   ǧ (`U+01E7`, lowercase) has been added. It is the only character
+   missing from *Old Standard* that is needed in some of the accepted
+   standards of romanization of classical Arabic.[^2]
+3. Additionaly, *Old Standard T* corrects `+ss06` feature provided by
+   *Old Standard*. This feature is supposed to distinguish between
+   regular and ‘curly’ beta (β/ϐ) and to print ‘curly’ beta (`U+03D0`)
+   in medial position. This feature works in most cases with *Old
+   Standard*. However, it fails if the beta is preceded by a vowel
+   with an acute accent taken from the *Greek extended* Unicode block.
+
+### Why *Old Standard T*?
+At the time of writing, *Old Standard* was last updated six years
+ago. Nevertheless, the letter `T` stands for *Transient*, which means
+that *Old Standard T*, should only stay as long as what it features is
+not included in *Old Standard*.
+
+Documentation
+-------------
+Please refer to Alexey Kryukov's documentation which is can be found
+here: <http://mirrors.ctan.org/fonts/oldstandard/doc/oldstand-manual.pdf>
+
+[^1]: See <https://github.com/akryukov/oldstand>
+
+[^2]: See for references the [current documentation of the arabluatex
+     package](http://mirrors.ctan.org/macros/luatex/latex/arabluatex/arabluatex.pdf),
+     sect. ``Transliteration''.