Proposed Script tag additions

[Levantovsky, Vladimir]

Dear all,

Based on the comments and suggestions presented to this AHG, I put together a draft of the future Working Draft Amendment for your consideration (please see attached). I also have the following comments and questions regarding the changes that Behdad proposed (see link and email below):


-          Fig.1 in GSUB section - Behdad, can you please provide more details regarding the changes you would like to see in this Fig. 1?

-          GDEF header format - this has already been addressed by the Corrigendum 1 published in July 2010 (see w11381 attached for your reference). Please let us know if you believe this would not be sufficient to address your comment.

-          Can you please propose modified language you would like to see as 'usMaxContent' description in OS/2?

-          LookupFlags - this seems like a place that deserves additional attention, and I am not sure if we are ready to propose any specific text modifications to address the issues you flagged. However, please note that the Working Draft amendment will not be finalized until March, and we have enough time to discuss this and agree on the proposed changes. I suggest that we should keep it as work in progress for now, with the goal to add this to WD before March.

Thank you,
Vladimir



From: Levantovsky, Vladimir
Sent: Monday, January 10, 2011 2:02 PM
To: Levantovsky, Vladimir; mpeg-OTspec at yahoogroups.com
Subject: RE: Proposed Script tag additions

I missed the changes suggested for amendment by Behdad earlier through the year, that I forwarded to the AHG list in one of my previous emails:
http://tech.groups.yahoo.com/group/mpeg-OTspec/message/524. Please consider them as amendment items.

Thank you,
Vladimir


From: mpeg-OTspec at yahoogroups.com [mailto:mpeg-OTspec at yahoogroups.com] On Behalf Of Levantovsky, Vladimir
Sent: Monday, January 10, 2011 1:43 PM
To: mpeg-OTspec at yahoogroups.com
Subject: [mpeg-OTspec] RE: Proposed Script tag additions



Dear AHG members,

Happy New Year!
With the holiday season behind us, we need to start preparing for the upcoming WG11 meeting and discuss the proposed items for a new amendment of ISO OFF standard.

So far, I have the following items brought for AHG attention in the past few months:

-          Addition of the new scripts tags defined in Unicode 5.2 and Unicode 6.0 standards

(http://tech.groups.yahoo.com/group/mpeg-OTspec/message/497)

-          Consider whether a Registration Authority should be setup to maintain Layout Tag Registry

(http://tech.groups.yahoo.com/group/mpeg-OTspec/message/500)

-          Consider whether creating the ISO text layout specification as a new work item is feasible and desirable

(http://tech.groups.yahoo.com/group/mpeg-OTspec/message/516,

http://tech.groups.yahoo.com/group/mpeg-OTspec/message/517 and

http://tech.groups.yahoo.com/group/mpeg-OTspec/message/518)

The last two items are not necessarily tied to the proposed amendment and can be considered separately. I would like to once again remind all of you to bring any other items you want to consider for the inclusion in the amendment to the attention of this AHG.

Thank you,
Vladimir


From: mpeg-OTspec at yahoogroups.com [mailto:mpeg-OTspec at yahoogroups.com] On Behalf Of Levantovsky, Vladimir
Sent: Monday, December 06, 2010 1:39 PM
To: mpeg-OTspec at yahoogroups.com
Subject: [mpeg-OTspec] RE: Proposed Script tag additions


Dear all,

I was reminded that the standards development procedures have recently been changed, which will affect the proposed schedule. Taking into account the new process, the tentative schedule for the amendment would be as follows:

January 24-29, 2011 - Working Draft amendment
March 21-25, 2011 - Proposed Draft amendment and issue combined PDAM / registration ballot (3 months)
July 18-22, 2011 -Draft amendment (5 months ITTF ballot)
Nov. 28 - Dec. 02, 2011 - Study Draft Amendment (if needed, to review and incorporate early comments)
Feb. 6-10, 2012 - Final Draft Amendment (2 month, simple yes/no ballot)
April 2012 - publication

Please remember to submit your proposals for additional items to be considered as part of this amendment no later than early January 2011. However, taking a holiday season into account, I'd suggest to have the discussion started as early as possible, with new suggestions submitted for AHG to review before holidays.

Thank you,
Vladimir


From: mpeg-OTspec at yahoogroups.com [mailto:mpeg-OTspec at yahoogroups.com] On Behalf Of Levantovsky, Vladimir
Sent: Thursday, December 02, 2010 7:59 PM
To: Michelle Perham; mpeg-OTspec at yahoogroups.com
Subject: [mpeg-OTspec] RE: Proposed Script tag additions


Dear all,

I would like to suggest for your review and consideration the following proposed schedule for a new OFF amendment, which is based on the approved schedule of the WG11 (MPEG) meetings:

January 24-29, 2011 - Working Draft amendment
March 21-25, 2011 - Proposed Draft amendment and issue combined PDAM / registration ballot (3 months)
July 18-22, 2011 - Final Proposed Draft amendment (4 months ballot)
Nov. 28 - Dec. 02, 2011 - Final Draft Amendment (2 month yes/no ballot)
Feb. 6-10, 2012 - publication

Some noteworthy points:

-          An attempt to accelerate the amendment and produce PDAM in January would not change the final outcome - the ballot would not be closed until the end of April, which will push the FPDAM date to July;

-          Starting with the working draft will allows us some time to review the additional proposals (if any) and incorporate them in the current amendment based on consensus;

-          Any proposed new features should be submitted to this AHG list no later than early January to allow sufficient time for discussions. The agreed proposals would have to be submitted to WG11 no later than Jan. 17th;

-          We will have a chance to review and improve the Working Draft amendment and improve it before promoting the document to the Committee Draft stage in March.

Please submit your ideas and proposals for new features and/or improvements and clarifications to the spec for AHG consideration.

Thank you and regards,
Vladimir


From: mpeg-OTspec at yahoogroups.com [mailto:mpeg-OTspec at yahoogroups.com] On Behalf Of Michelle Perham
Sent: Monday, November 08, 2010 6:40 PM
To: mpeg-OTspec at yahoogroups.com
Subject: [mpeg-OTspec] Proposed Script tag additions


The most recent versions of Unicode (versions 5.2 and 6.0) have added several new script tags that are missing in the second edition of ISO/IEC 14496-22 "Open Font Format" specification and the corresponding version of the OpenType 1.6. The current list of script tags can be found in the subclause 6.4.1 of 14496-22 and is available here: http://www.microsoft.com/typography/otspec160/scripttags.htm.

The newly defined Unicode script tags include the following:

Tag

Description

Comment

armi

Imperial Aramaic

Unicode 5.2

avst

Avestan

Unicode 5.2

bamu

Bamum

Unicode 5.2

batk

Batak

Unicode 6.0

brah

Brahmi

Unicode 6.0

egyp

Egyptian hieroglyphs

Unicode 5.2

kthi

Kaithi

Unicode 5.2

lana

Tai Tham (Lanna)

Unicode 5.2

lisu

Lisu (Fraser)

Unicode 5.2

mand

Mandaic, Mandaean

Unicode 6.0

mtei

Meitei Mayek (Meithei, Meetei)

Unicode 5.2

orkh

Old Turkic, Orkhon Runic

Unicode 5.2

phli

Inscriptional Pahlavi

Unicode 5.2

prti

Inscriptional Parthian

Unicode 5.2

samr

Samaritan

Unicode 5.2

sarb

Old South Arabian

Unicode 5.2

tavt

Tai Viet

Unicode 5.2


We propose to start a new amendment and include the new script tags in the text of the ISO OFF standard and in the OpenType 1.6.

An illustration of the proposed changes can be found here:
http://www.microsoft.com/typography/otspec160/scripttagsProposed.htm

Michelle











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