[xsd-users] XML Schema Authoring Guide has disappeared

[Jeroen N. Witmond]

Greetings,

On https://www.codesynthesis.com/projects/xsd/ , 
https://www.codesynthesis.com/projects/xsde/ and 
https://www.codesynthesis.com/pipermail/xsd-users/2005-October/000055.html 
there is a reference to an "XML Schema Authoring Guide" 
https://www.codesynthesis.com/projects/xsd/documentation/schema-authoring-guide.xhtml

This file seems to be both useful and absent ...

Jeroen.