Re: [charmod-norm] Arabic & Hebrew unique issues associated with sections 2.4 and 2.5

EBCDIC isn't a single code page (as a matter of fact Unicode also can 
refer to UTF-8 / UTF-16 code pages). Many of EBCDIC code pages are 
mentioned at: 
https://www-01.ibm.com/software/globalization/ccsid/ccsid_registered.html
In my previous comment I referred to 
- EBCDIC Hebrew (cp-424) - 
https://www-01.ibm.com/software/globalization/ccsid/ccsid424.html and 
also here: http://www.tachyonsoft.com/cp00424.htm
- EBCDIC Arabic (cp-420) - 
https://www-01.ibm.com/software/globalization/ccsid/ccsid420.html and 
also here: http://www.tachyonsoft.com/cp00420.htm

Both Arabic and Hebrew EBCDIC (cp-424 and cp-420) are visual. The 
visual nature stems from correlation between storage and display on 
green screens (old ones: https://en.wikipedia.org/wiki/IBM_3270 or 
screen emulators - modern software which mimic old screens via desktop
 app such as IBM HOD - 
http://www-03.ibm.com/software/products/en/rationalhostondemand or non
 IBM such as ERICOM  - http://www.ericom.com/tn3270.asp ). 

In modern operating systems (i.e. Windows, Android etc.), text stored 
in the buffer in the chronological order (the same order in which it 
was typed), undergoes reordering (performed by UBA [Unicode Bidi 
Algorithm] compliant Bidi engine) before it is rendered on the screen.
 As opposed to modern operating systems, on legacy systems (i.e. green
 screens) there is no any transformation which text undergoes before 
it is rendered. Namely it is rendered exactly like it appears in the 
storage. 

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Received on Monday, 22 February 2016 11:18:15 UTC