Define Diagram Line Style in the Settings

Define the properties of the diagram line's conveyed substance as follows:

1. Select Vertex, select Preferences, and select Edit.
2. Select Administrator's View.
3. Open the keyword group menu.param.
4. Select Default Line Insert Parameters.
5. For example, select the cell: linep_set(33) 1 0.5 1 3 146  (PIMATERIAL1) (default)
6. Enter a new name inside the parenthesis: Steam, for example.
7. Click OK.