[mpeg-OTspec] typo in the LTSH section of the opentype spec.

[Levantovsky, Vladimir]

Thank you Hin-Tak,
I will mark it up and will add this suggested change as a ballot comment on the recently opened amendment.

Regards,
Vladimir


-----Original Message-----
From: mpeg-OTspec at yahoogroups.com [mailto:mpeg-OTspec at yahoogroups.com] On Behalf Of Hin-Tak Leung htl10 at users.sourceforge.net [mpeg-OTspec]
Sent: Thursday, March 03, 2016 3:21 AM
To: mpeg-OTspec at yahoogroups.com; opentype-list at indx.co.uk; mstwsite at microsoft.com
Subject: [mpeg-OTspec] typo in the LTSH section of the opentype spec.

There are two typo's in 

https://www.microsoft.com/typography/otspec/ltsh.htm

as well as the equivalent sections in the ISO/IEC 14496:22 2015 pdf.

"... The criteria for linear scaling is:

a. (ppem size is ³50) AND (difference between the rounded linear width and the rounded instructed width £ 2% of the rounded linear width) ..."

it should read "...ppem size is >= 50..." and "...instructed width <= 2% of the rounded ..."

the ">=" and "<=" symbols are also mis-typed in both of the past 2007/2009 ISO 14496:22 pdf's.

The correct version was in the TrueType 1.66 specification, page 45 of this doc (but it says page 75 at that page's bottom):

http://www.microsoft.com/typography/tt/ttf_spec/ttch02.doc

Please correct the web page, and the ISO spec pdf.

I noticed the typo while re-implementing the LTSH check in the Microsoft Font Validator, a few months ago.



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Posted by: Hin-Tak Leung <htl10 at users.sourceforge.net>
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