Allows you to select the objects that you want to spool. For Generate Spools Command 
, you can choose pipeline systems, planning blocks, or WBS items. For Create Penetration Spools Command 
, you can choose penetration plates.
If you spool by WBS items, two additional drop-down items for WBS Item Type and WBS Item Purpose appear on the Spooling tab. While you are not required to set these options before spooling, the drop-down options provide you with the ability to spool WBS items based on the type and purpose. For example, if you select a WBS Item Type of Design Area and a WBS Item Purpose of Piping, the WBS items with this particular type and purpose are automatically selected in the tree view, allowing you to spool only these WBS items.