Siemens COMOS Operating Manual page 76

Generating pipe specs
6.4 The "Load pipe spec" window
"Engineering project" tab
In the structure tree you see the node that is entered in the properties of the engineering project
as the root node for the pipe spec definition.
This is where you define the pipe specs created locally in an engineering project. They are
marked as local base objects in the structure tree.
If the same node is entered in the engineering project as in the base project, you also see the
basic classes/system classes.
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PipeSpec Designer
Operating Manual, 09/2014, A5E32076948-AA