[TYPO3-english] Localisation value and locale_all value

[Rupali Gupta]

Hello List,
i want to know how can i find the locale_all and htmlTag_langKey values for
any language?
 page.config.locale_all = en_UK
 page.config.htmlTag_langKey = en_UK

second i would like to know if there is way to set the Default value of
Localisation setting under (page properties -> options tab) to "hide page if
no translation for current language exists" per code, Otherwise i Tick this
option for every page.

-- 
Regards,
Rupali