[mpeg-OTspec] AHG on Open Font Format kick-off

Thu Aug 14 22:29:21 CEST 2008

Dear all,

Having received no objections to Michelle's proposal, I added the
additional explanation proposed by Michelle as editorial, and extended
the "Language Tags" table in the subclause 5.4.2 with the column listing
relevant ISO 639 language codes.

The new version of the draft has been uploaded to AHG files storage and
can be downloaded using the following link:
http://groups.yahoo.com/group/mpeg-OTspec/files/20080814-w10068_14496-22
_FCD_2nd-Ed.zip
<http://groups.yahoo.com/group/mpeg-OTspec/files/20080814-w10068_14496-2
2_FCD_2nd-Ed.zip>  

I will be on vacation Aug. 16-30 and will not have access to email. I
would like to ask you to continue the review of the FCD text in
preparation for our AHG meeting/teleconference on September 8. I will
announce the detailed agenda for the call as soon as I come back from
vacation.

Thank you,
Vladimir

________________________________

	From: mpeg-OTspec at yahoogroups.com
[mailto:mpeg-OTspec at yahoogroups.com] On Behalf Of Levantovsky, Vladimir
	Sent: Tuesday, August 12, 2008 3:00 PM
	To: Michelle Hill; mpeg-OTspec at yahoogroups.com
	Subject: RE: [mpeg-OTspec] AHG on Open Font Format kick-off

	Michelle,

	Thank you very much for reviewing the text of the draft and
providing your comments.

	My understanding is that your intention is to add an additional
explanation on the relationships between OFF language tags defined by
ISO/IEC 14496-22 and the language codes defined by ISO 639. You also
proposed an additional text to clarify the use of OFF language tags.

	Since your proposal does not suggest any changes or modification
to the existing text, and the set of the existing language tags, already
defined by ISO/IEC 14496-22, remains the same - I would consider this
proposal to be an editorial comment and would like to ask AHG to review
it. Pending no objections from the AHG, I would recommend to add the
text suggested by Michelle, as its explanatory nature does not change
anything in the existing FCD draft, and provides valuable clarifications
for the users of the standard.

	Thank you,
	Vladimir

________________________________

		From: mpeg-OTspec at yahoogroups.com
[mailto:mpeg-OTspec at yahoogroups.com] On Behalf Of Michelle Hill
		Sent: Monday, August 11, 2008 6:10 PM
		To: Levantovsky, Vladimir; mpeg-OTspec at yahoogroups.com
		Subject: RE: [mpeg-OTspec] AHG on Open Font Format
kick-off

		Thank you Vladimir. We reviewed the text of the draft
and would like to point out that there is no explanation on the
relationship between the OFF language tags and the language codes
defined in the ISO 639. We believe that the intended use of "Language
Tags" ( in subclause 5.4.2) is unclear and the text would benefit if
additional clarification is provided. We would like to suggest the add
the new column in the table, identifying ISO language codes for each OFF
language tag. In addition, we recommend to add the following text
explaining the use of language system tags:

		Language system tags identify the language systems
supported in a OpenType Layout font. What is meant by a "language
system" in this context is a set of typographic conventions for how text
in a given script should be presented. Such conventions may be
associated with particular languages, with particular genres of usage,
with different publications, and other such factors. For example,
particular glyph variants for certain characters may be required for
particular languages, or for phonetic transcription or mathematical
notation. 

		In principle, a given set of conventions may be shared
across multiple scenarios. For instance, two different languages
(perhaps unrelated) may happen to follow the same conventions. Language
system tags can be registered on a perceived-need basis, however; as a
result, there is no guarantee that each tag represents a distinct and
unique set of conventions. Tags can, however, be registered with the
intent of representing conventions that apply to multiple languages. In
such cases, the documented description for the tag should reflect that
intent. 

		It should also be noted that there may be more than one
set of typographic conventions that apply to a given language. 

		Therefore, in several respects, language system tags do
not correspond in a one-to-one manner with languages. Even so, many
registered tags are intended to represent typographic conventions for a
particular language. For cases in which a correlation exists between a
tag and one or more languages, the language identities are documented
here by reference to ISO 639-2 and ISO 639-3.* 

		If information is available to an application declaring
the language of text content, then the application may make use of that
to select a default language system tag to be applied when displaying
that text. It is preferable, however, to give users control over the
choice of language system tag to be used. (Depending on the application
scenario, such control may be given to content authors, to content
readers, or to both.) 

		*ISO 639-2 provides identifiers for individual languages
as well as for certain collections of languages. ISO 639-3 provides
identifiers for a far more comprehensive set of individual languages,
though not for collections. Entities in ISO 639 that are referenced here
may include any of the individual languages covered in ISO 639-2 or ISO
639-3, or to any of the collections covered in ISO 639-2. 

		Thank you,

		Michelle Hill

		From: mpeg-OTspec at yahoogroups.com
[mailto:mpeg-OTspec at yahoogroups.com] On Behalf Of Levantovsky, Vladimir
		Sent: Monday, August 11, 2008 2:11 PM
		To: Thomas Phinney; mpeg-OTspec at yahoogroups.com
		Subject: RE: [mpeg-OTspec] AHG on Open Font Format
kick-off

		Okay. Actually, I believe that shifting the start time
to 1:00pm would benefit our colleagues from Japan giving them a choice
to join in the discussion early morning Japan local time. Assuming there
are no objections from the intended participants of this AHG meeting -
we will change the start time of the call to 1:00 pm PDT (20:00 UTC).
The expected duration of the call will be four hours, the detailed
agenda will be announced prior to the call.

		Thank you,

		Vladimir

________________________________

			From: Thomas Phinney [mailto:tphinney at adobe.com]

			Sent: Monday, August 11, 2008 5:02 PM
			To: Levantovsky, Vladimir;
mpeg-OTspec at yahoogroups.com
			Subject: RE: [mpeg-OTspec] AHG on Open Font
Format kick-off

			Actually, in discussing this with Apple, I
believe we agreed on a 1 pm (PST) start time, which is four hours later
(18:00 UTC). I believe we were thinking a half day would be enough.

			Regards,

			T

			From: mpeg-OTspec at yahoogroups.com
[mailto:mpeg-OTspec at yahoogroups.com] On Behalf Of Levantovsky, Vladimir
			Sent: Monday, August 11, 2008 8:51 AM
			To: mpeg-OTspec at yahoogroups.com
			Subject: RE: [mpeg-OTspec] AHG on Open Font
Format kick-off

			Dear all,

			As a follow up to my previous announcement,
please find below the conference bridge dial-in information for our AHG
teleconference meeting:

			Access numbers:

			USA: 866-617-3597 or 210-795-0625

			UK:   0800-279-9632 or +44-20-7108-6391

			France: 080-510-0984 or +33-1-7070-8456

			Italy:0800-906-465 or +39-02-3604-7040

			Japan: 0034-800-400652 or +81-3-5539-5161

			(if any participant will join this call from the
country not listed above - please email me and I will provide you with
additional country-specific dial-in information).

			Participant passcode: 3148166#

			The conference call is suggested to be held on
Monday, September 8th, 2008 at 16:00 UTC, for correct local times please
refer this link:

http://www.timeanddate.com/worldclock/fixedtime.html?month=9&day=8&year=
2008&hour=9&min=0&sec=0&p1=283
<http://www.timeanddate.com/worldclock/fixedtime.html?month=9&day=8&year
=2008&hour=9&min=0&sec=0&p1=283> 

			Having our conference call on September 8 will
provide us enough time to review the current draft of the specification
and to accommodate your suggestions and corrections (if any) to meet the
FCD submission deadline on September 12, 2008. Please let me know as
soon as possible if this date and/or time may not work for you.

			For those of you who would like to meet face to
face at this AHG meeting - Apple has kindly agreed to host AHG members
at their Cupertino campus in California. Further details about the
location will be announced shortly.

			With kind regards,

			Vladimir

________________________________

				From: mpeg-OTspec at yahoogroups.com
[mailto:mpeg-OTspec at yahoogroups.com] On Behalf Of Levantovsky, Vladimir
				Sent: Friday, August 08, 2008 3:55 PM
				To: mpeg-OTspec at yahoogroups.com
				Subject: [mpeg-OTspec] AHG on Open Font
Format kick-off

				Dear all,

				I just uploaded the draft text of FCD of
the ISO/IEC 14496-22 (2nd edition) "Open Font Format" specification, and
would like to announce the official kick-off of the AHG OFF. The AHG
will remain active until 87th meeting of SC29/WG11 in January 2009.

				The AHG mandate is as follows:

				1.	To review the new features and
corrections proposed in the ballot comments and make sure that the
proposed changes made in the text of the 2nd edition of ISO/EC
14496-22/FCD can be implemented without an adverse effect on backward
compatibility. 
				2.	To review the text of ISO/IEC
14496-22/FCD (2nd edition), make sure that all the new functionality is
properly documented, and to provide recommendations if new changes in
the text and any additional clarifications are necessary. 

				I would like to ask you to review the
draft text and to provide your comments you find that changes ("Track
Changes" is on) made in the text of the specification may in any way
affect existing fonts and/or font rendering and text layout
implementations. Any suggestions that are editorial in nature and would
improve the readability and clarity of the specification are welcome and
very much appreciated. 

				Technical comments (if any) can be
discussed on the email reflector; however, I would like to propose to
have a conference call on September 8 to discuss all changes and
proposed clarifications (Please note - the deadline for submission of
this document is September 12, 2008). I will send you the detailed
conference call information in a separate email.

				The draft can be accessed using the
following link:

http://groups.yahoo.com/group/mpeg-OTspec/files/20080807-w10068_14496-22
_FCD_2nd-Ed.zip
<http://groups.yahoo.com/group/mpeg-OTspec/files/20080807-w10068_14496-2
2_FCD_2nd-Ed.zip>  

				Thank you and best regards,

				Vladimir

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