The String Table Editor can be launched from Window→Localization Editor→String Table Editor.
Managing Strings with the String Table Editor, you can
Creating a New String
Note: Before you can add strings, be sure to have created a language.
Fill out the < New Key > and < New Localized String > text boxes. Then click Add String.
The new string will be added to all the languages you have created. If you switch to another language, you will see strings that need translation.
Deleting a String
Click on the row that you’d like to delete. Action buttons will appear under the selected row. Click Delete.
Deleting a string will remove that string from all languages. Use with caution.
Updating a String
Click on the row that you’d like to update. Action buttons will appear under the selected row. Modify either the key or string, then click Apply.