Supporting
This document
provides additional information for the product’s Readme file with regard to
GB18030-2000 support in Acrobat product features.
What’s new and
improvement in terms of supporting
·
Portfolio feature in Acrobat 9 is
supported by Platform and Navigation modes. To preview text file contains
GB18030 characters, Platform mode is recommended (#1730058
fixed).
·
PDFMaker
could not support GB 4-byte characters in its UI in the previous release. The
issue has been fixed in this new release (#131523 fixed).
·
PDFMaker
for Macintosh is not included in this release
·
In
the previous release a problem was reported when using Search with a single
character in the CJK Extension A block. This was due to incorrect background
indexing. The indexing mechanism has been enhanced and this issue is resolved
(#1152345 fixed).
·
In
the File Metadata Information dialog, the new FileInfo
library in Acrobat 9 is able to display GB 18030 characters properly in XMP
panel (#1590900
fixed).
Limitation
·
Acrobat is software that can be
installed and runs on Windows. Limitation of supporting GB 18030 standard
platforms will limit the functionality of the product.
·
MS “Notepad” on Windows does not
support 4-byte GB 18030 encoding characters. It is suggested that PDF should not
be created from a raw text file with 4-byte GB 18030 characters via
Notepad.
·
Acrobat handles all text as
Unicode (supports surrogates too) and the application uses system APIs for
displaying the text in the UI. If there is any specific problem with text
rendering, it may be an operating system limitation.
Known Issues
·
Paper Capture provides OCR
recognition for most GB2312 characters (over 4200 characters). These characters
are specified by an OCR engine which is supplied by a third-party
company.
·
Flash Player 9.5 is used to
support Acrobat and Reader 9 new feature PDF Portfolio. Portfolio feature in
Navigation mode as known as Flash mode. The current Flash Player 9.x version
does not fully support for display, input and edit GB18030 characters
appropriately on Windows OS (#1750974) and on MAC OS (#1763303).
The
workaround is to set Platform mode with GB 18030 support instead of using Flash
mode on Windows and Mac OS when invoke Portfolio function. The process is
1.
Edit->Preferences->International;
2. Choose "GB18030 compatible font"
in Select Font drop-down list;
3. Quit Acrobat and re-launch
Acrobat
·
The
menu item Comments > Comment View > Show by Reviewer can not display 4-byte GB 18030 characters. This is the same
feature with Review & Comment (tasks toolbars) > Comment View > Show
by Reviewer. It displays with white boxes or dots in the Reviewer list. This UI
is not respecting the preference setting for UI fonts (#1327934).
There
is a workaround for this problem. The problem is a font selection for this part
of UI. The font is SimSun instead of SimSun-18030. You
can change this OS default font from SimSun to
SimSun-18030 by following operation:
1.
Start
menu > Control Panel > Display > Appearance > Advanced
2.
Set
Item='Menu' and font='SimSun18030'
This
problem does not occur on Vista because Vista OS font contains GB18030 4-byte
characters through Unicode support.
·
When
selecting a text string in PDF and editing (insert or replace) it with a 4 byte
characters, these characters in Pop-up Text Edit display as “?” (#1752641). This
problem occurs when trying to populate the Extension A characters into the Text
Edit Pop-up.
There
are two workaround solutions:
1.
Remove
the “?” in pop-up edit box, and retype character
Or
2.
Select
a text string in PDF first, and then select Replace Selected Text or Insert Text
At Cursor from drop-down Text Edits menu to open the
edit box. And now, input any 4-byte characters.
·
If
the plain text file has a mixed of 2 & 4 byte characters in the filename,
PDF cannot be created. (#1749671) To create PDF from plain text file, the
recommended filename should have either 2 or 4 byte characters.