Property of the ScriptLine : Post-Processing.
In the Unicode version of Q++ Studio, this property is one of the options of the Generation Options property.
Use this property to control if the output file is saved by QuarkXPress in QuarkXPress' Single-Language format or QuarkXPress' Multi-Language format.
Note that this property is not related to the Languagesproperty of a diary, but to the difference in output formats between the US version of QuarkXPress (single language) and the European Passport version of QuarkXPress (multiple languages), as shown in the QuarkXPress save file dialog :

The possible values for this property are :
Default |
This is the recommended setting and lets QuarkXPress decide, from the GridTemplates used in the diary, if the output file should be saved as a single language QuarkXPress file or a multiple language QuarkXPress file. |
Single |
Forces QuarkXPress to save the output file as a single-language QuarkXPress file. This setting is not recommended as you may often get a dialog asking you to choose which language to save the output file in. |
Multiple |
Only applicable if you are using the Passport version of QuarkXPress. Use this setting for diaries where you get an erroneous message to choose the language to use to save the output file. |
You should leave this property set to the Default value, except for some particular scripts where QuarkXPress may incorrectly try to save the output file as a single-language file and hence cause the output file saving to be interrupted by a dialog asking you to select a unique single language.