Size : Height and Width
Property of the ScriptLine : BookFormat.
These 2 properties let you set the size of the QuarkXPress file that is your output file. You usually do not need to set this property since, as soon as you have selected a Template, Q++ will issue a message and offer to set the sizes to match the largest QuarkXPress file in the Script.
If you do set these properties manually, you will first want to select the type of Size Units you wish to use and then type in the size value, using the decimal separator used in your Windows settings (usually a period for the US, and a comma in the rest of the world).