1. The document discusses SignWriting, a writing system for sign languages that is supported by the Center for Sutton Movement Writing. 2. SignWriting uses a grid-based system of glyphs and can be encoded in Unicode, with some sign languages encoded in Plane 15 and others in Plane 16. 3. The Center for Sutton Movement Writing aims to provide standardized, stable, and free specifications for encoding various sign languages in fonts and Unicode for wide accessibility across operating systems and devices.

1. Thanks to the UTC
Prepared for UTC # 144 / L2 # 241 (July 27-31, 2015)
a Unicode Technical Committee meeting in Redmond, WA
by Stephen E Slevinski Jr
in association with the Center for Sutton Movement Writing
Characters for information interchange
From the Center for
Sutton Movement Writing
Writing the sign language of the world

2. The Big Umbrella of
the Center for Sutton Movement Writing
All sign languages
supported right now.
Documented, stable,
and free standards.
Many implementations
from separate groups.
Other sign languages
scripts can be supported
through a font-face.

3. Separate Concerns for
Written Sign Language
CSMW UTC
Production
Fonts
Growth
Forwards Compatibility
Domain Experts
Development
Design Ideas
Potential
Backwards Compatibility
Unicode Experts

4. Standard Organizations
ISOW3C
IANAIETF
The Center for Sutton Movement Writing
Unicode

5. The SignWriting Reality
http://signbank.org/SignWriting_Character_Viewer.html
16-bit glyphs set
created by Valerie Sutton
652 Palettes of 6 by 16 Grid
Dynamic Pages: single file 114 KB
234 Pages Deleted
From Wikipedia
Static Pages: 8 MB after markup
Could be optimized
Symbol Encoding Model
PUA Plane 16 (37,811 characters)

6. https://incubator.wikimedia.org/wiki/Wp/ase/AS18517S20500S2ff00M529x544S2ff00482x483S20500519x504S18517503x517
Large ASL Wikipedia Page
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Server Side SVG
PUA Plane 15
ASCII
Real numbers
Size Matters
Page Title in FSW
66 bytes long
Equivalent PUA Plane 15
28 code points
112 bytes of UTF-8
336 bytes URL Encoded
%F3%BD%A0%80%F3%BD%A2%B5%F3%BD%A0%91%F3%BD%A0%A7
%F3%BD%A4%B5%F3%BD%A0%90%F3%BD%A0%A0%F3%BD%A8%AF
%F3%BD%A0%90%F3%BD%A0%A0%F3%BD%A0%83%F3%BD%BC%9D
%F3%BD%BC%AC%F3%BD%A8%AF%F3%BD%A0%90%F3%BD%A0%A0
%F3%BD%BB%AE%F3%BD%BB%AF%F3%BD%A4%B5%F3%BD%A0%90
%F3%BD%A0%A0%F3%BD%BC%93%F3%BD%BC%84%F3%BD%A2%B5
%F3%BD%A0%91%F3%BD%A0%A7%F3%BD%BC%83%F3%BD%BC%91
󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀󽠀
https://incubator.wikimedia.org/wiki/Special:PrefixIndex/Wp/ase/
AS18517S20500S2ff00M529x544S2ff00482x483S20500519x504S18517503x517

7. The SignWriting Stack 2015
iOSWindows Linux Android OS X
Explorer FireFox Chrome Safari Opera
TrueType Fonts (TTF)
The Bottom Layers
SignWriting works on desktops,
tablets, and phones.
Forward compatible, rather than
backward compatible.
Vertical Writing Mode
has very poor support.

8. Wide Operating System Support
http://slevinski.github.io/sw10js/guide.html#ttf
Android support through CSS font-face or App.

9. Freeform positioning
Script Encoding Model
PUA Plane 15 (1,179 characters)
2-D Script
SignWriting has the
largest data set and
the most advanced
2-D searching of any
planar script.
Number characters
Express the concept
of the ruler principle
with characters.
http://www.signwriting.org/archive/docs11/sw1003_SignWriting_in_Maltese_Sign_Langauge_Dissertation_Maria_Galea_Oct03_2014.pdf

10. Sorting with
Syllables
Supports multiple theories

11. Thanks to the UTC
by Stephen E Slevinski Jr
http://slevinski.github.io
slevinski@signwriting.org
http://www.slideshare.net/StephenSlevinski/presentations