This package provides support for internationalization (I18N) and   localization (L10N).     I18N is usually concerned with providing an application in multiple   languages, i.e. a key point is to provide translations for user visible   strings (labels, messages, help texts, ...) and select the right set of   strings for a given language.     L10N is concerned with adapting the visual display of common units (calendar   items like day and month names, date formatting, number formatting, keyboard   key names, ...) to regional preferences.     There is a coupling between the two, hence <i>locale<i> names usually   consist of a language part and a region part, as e.g. in <code>en_US<code>   or <code>de_AT<code>. qooxdoo's locale system is oriented towards the   Unicode.org <a href="http:cldr.unicode.org">CLDR<a> system, so both I18N   and L10N data is organized according to locales.  That means selecting a   certain locale in an application will try to pick a corresponding set of   translations as well as regional settings.     <h3> Translations <h3>     The important step in providing multiple translations for an application is   marking strings in the code for translation. This is easily done by wrapping   those strings in one of several translation marker calls like {@link   qx.locale.MTranslation#tr .tr()}. Those are available e.g. on each class that   extends from {@link qx.ui.core.Widget Widget} or {@link   qx.application.AbstractGui AbstractGui} (via {@link qx.locale.MTranslation   MTranslation}), so you can use them on your application classes right away.     <pre class='javascript'>   var label = new qx.ui.basic.Label(this.tr("News  section"));   <pre>     In the simple case calls like <code>this.tr()<code> above will return the   translation of the argument according to the currently selected locale if   available. If the <code>qx.dynlocale<code> {@link qx.core.Environment   Environment} setting has value true such calls will return an instance of   {@link qx.locale.LocalizedString LocalizedString} instead. LocalizedString   behaves like a string in many situations, but allows switching to yet another   locale at a later time (normal strings are fixed once returned from the   this.tr() call).     The {@link qx.locale.Manager Manager} class allows switching between locales.     <h3> Localization <h3>     The other classes in this namespace, like {@link qx.locale.Date Date}, {@link   qx.locale.Key Key} or {@link qx.locale.Number Number}, encapsulate regional   preferences for formatting and other properties with regard to such data.     For more information about how to deploy I18N and L10N in qooxdoo   applications see the corresponding    <a href="http:manual.qooxdoo.org${qxversion}pagesdevelopmentinternationalization.html">   manual section<a>.