ISO 10646
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... 10646].
As ISO 10646 specifies too little about how text is visualized, to
practically use ISO 10646, it is necessary to restrict the standard
...
... As ISO 10646 specifies too little about how text is visualized, to
practically use ISO 10646, it is necessary to restrict the standard
minimally and then add some amount of profiling information.
...
... ISO2022] based national standards, sufficient profiling
information is provided by national standardization bodies, but, for
ISO 10646, such a profiling is not yet provided.
As the profiling of ISO 10646 ...
... ISO 10646, such a profiling is not yet provided.
As the profiling of ISO 10646 largely affects which character or
combination of characters could be properly displayed, changes of
profiling of ISO 10646 ...
... ISO 10646 largely affects which character or
combination of characters could be properly displayed, changes of
profiling of ISO 10646 are as significant as additions of new
character sets of ISO ...
... ISO 2022.
That is, it's impractical to support the entirety of ISO 10646 (new
restriction or profiling can always be added), so a client needs to
...
... can decide whether to display the body part. Thus, it is necessary to
provide multiple charset names to each variation of ISO 10646.
For example, in Japan with Japanese windows NT, only those Han
...
... pattern is commonly provided.
The other problem of ISO 10646 for Han characters is that, to display
them in quality required for daily plain text processing in
China/Japan/Korea, it is necessary to add profiling information on
...
... which one of Chinese/Japanese/Korean the text is using. It should be
noted that this feature makes multilingual mixed
Chinese/Japanese/Korean text with ISO 10646 impractical.
Also, just as [RFC1521 ...
... corrected by [RFC1556], it is also unclear how bi-directionality
could be supported with ISO 10646. There are too much ways to
support bi- directionality. So, until some bi-directionality
mechanism(s) becomes widely supported, it is necessary to exclude
...
... characters for languages which requires bi-directionality support
from the minimal variation. It should be noted that, though ISO
10646 is intended to be free from long term states, save for some
profiling information, introduction of bi-directionality with ISO
10646 do requires the long term states.
...
... from the minimal variation. It should be noted that, though ISO
10646 is intended to be free from long term states, save for some
profiling information, introduction of bi-directionality with ISO
10646 do requires the long term states.
Combining characters also cause problems. In many countries where
...
... such restriction, the result of combination is completely meaningless
which is the current state of ISO 10646. That is, if some
combination is allowed in some implementation while the other does
not support it, communication between them is difficult unless ISO
10646 ...
... ISO 10646. That is, if some
combination is allowed in some implementation while the other does
not support it, communication between them is difficult unless ISO
10646 is profiled to be least common set of widely supported
combinations. So, again, until combination restriction will be
developed for each language ...
...
According to those considerations, this memo defines two variations
of ISO 10646. They are "ISO-10646" as the minimal basic variation and
"ISO-10646 ...
... ISO-10646-J-1" as the variation which could be useful in Japan.
Finally, this memo, by no means, promotes the use of ISO 10646 on the
Internet. It's use is strongly discouraged, when there are other
...
... Internet. It's use is strongly discouraged, when there are other
charsets which can encode the same information, Families of ISO 10646
based charsets, like ISO ...
... ISO-10646 is profiled to be the most basic part of the family of
encodings based on ISO 10646 and contains the following minimal
graphic characters:
...
... C0 and C1 control characters may also be used as specified in the
section 16 of ISO 10646.
The text with "ISO-10646 ...
... C0 and C1 control characters may also be used as specified in the
section 16 of ISO 10646.
The text with "ISO-10646 ...
...
Shapes of Han characters should be of Japanese Han, that is, those of
column "J" in section 26 of ISO 10646.
As no combining characters are included, "ISO-10646 ...