Per consensus at http://th.wikibooks.org/wiki/วิกิตำรา:สภากาแฟ/จัดระเบียบวิกิตำรา, we would like to enable "Subject:" namespace. and would like to have "หัวเรื่อง:" and "คุยเรื่องหัวเรื่อง:" to be localized namespace of "Subject:" and "Subject talk:" respectively.
In addition, we had translated "wikibooks" to "วิกิตำรา" long time ago, however, {{ sitename }} is still "wikibooks" nowadays. So please change sitename from "wikibooks" to "วิกิตำรา" too.
Thank you.
Version: wmf-deployment
Severity: normal