On the right is a screenshot of the properties of the International scriptline, as displayed in the properties inspector. Click on any of the properties in that image to navigate to the corresponding help topic.
If the Scripts Editor is wide enough, Q++Studio will display the names of all selected Languages on the International ScriptLine. Otherwise, Q++Studio will display the number of languages.
The full list of selected Languages can always be obtained, without opening its property editor, by placing your mouse cursor over the Languages property, in the Properties Inspector:
There is one International ScriptLine per Script, and it cannot be deleted, moved, nor disabled.