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 * Usage
 * Outputs " " for right-to-left languages else " ".
 * The default returned values " " and " " can also be customized.


 * Syntax
 * The 1st (optional) parameter language-code (whose value may be passed alternatively by name as ) should be conforming to BCP47, as required by web standards (HTML/CSS...), rather than Wikimedia labels for designating languages in domain names (in some cases, Wikimedia language codes are not conforming and only used for interwikis and URLs; most of them are being migrated to BCP47, which is based on some parts of the ISO649 standard).
 * If no language-code parameter is specified, it defaults to the preferred UI language of the visitor viewing the current page, which for you is currently.
 * The 2nd and 3rd (optional) parameters allow changing the default return values for languages written in RTL and LTR scripts (respectively), whose default are " " and " ". These return values may be passed alternatively by name as  and.
 * This can be used to customize CSS styles such as text alignment or floatting side or lateral margins/borders/paddings, or to change the displayed text/symbols or names of images/icons depending on the script direction.
 * If no language-code parameter is specified, it defaults to the preferred UI language of the visitor viewing the current page, which for you is currently.
 * The 2nd and 3rd (optional) parameters allow changing the default return values for languages written in RTL and LTR scripts (respectively), whose default are " " and " ". These return values may be passed alternatively by name as  and.
 * This can be used to customize CSS styles such as text alignment or floatting side or lateral margins/borders/paddings, or to change the displayed text/symbols or names of images/icons depending on the script direction.
 * The 2nd and 3rd (optional) parameters allow changing the default return values for languages written in RTL and LTR scripts (respectively), whose default are " " and " ". These return values may be passed alternatively by name as  and.
 * This can be used to customize CSS styles such as text alignment or floatting side or lateral margins/borders/paddings, or to change the displayed text/symbols or names of images/icons depending on the script direction.
 * The 2nd and 3rd (optional) parameters allow changing the default return values for languages written in RTL and LTR scripts (respectively), whose default are " " and " ". These return values may be passed alternatively by name as  and.
 * This can be used to customize CSS styles such as text alignment or floatting side or lateral margins/borders/paddings, or to change the displayed text/symbols or names of images/icons depending on the script direction.


 * Note
 * Currently it recognizes the following codes of languages usually written in a right-to-left script.
 * All other languages will be assumed to use a left-to-right script.


 * Examples
 * , for the current user language which is ( ), returns.
 * , for ( ), returns.
 * , for ( ), returns.
 * , for  ( ), returns.
 * , for  ( ), returns.
 * , for the current user language which is ( ), returns.
 * , for the current user language which is ( ), returns.
 * , for ( ),  returns.
 * , for ( ),  returns.
 * , for ( ),  returns.
 * , for ( ), returns.