Your Localizable.strings file(s) allow you to easily translate your plug-in's user-visible strings.
Localizable.strings files live inside of *.lproj folders in the root-level Resources folder of your plug-in. For instance, your English strings will live here:
Localizable.strings files are plain text files that use the following syntax:
"localizable.id.key" = "Localized string"; // A comment "another.localizable.id.key" = "Another string";
Most commonly, you will be localizing the titles for your Action.xml files. In this instance, if you have an action with the ID "com.mydomain.mysugar.text-actions.action-name" then you would have the following entry in your Localizable.strings file:
"com.mydomain.mysugar.text-actions.action-name.title" = "My Custom Action";
If you are localizing a different element, you will append something other than "title" to the action ID.