From SPLASH

Roofs
Using lines and offset to aid in Truss layout
By Grant McCombie (Maccadd)
Jun 26, 2003

Now that Version 12 allows for more "visible items" we can use lines placed in Drawing mode with the offset tool to help place trusses more accuratly
Drawing Mode
Once you have placed your lines you can switch to "Roof mode" and go to "Options > Visible items . and highlight the Shapes box" this will allow you to see the lines in roof mode and you can then use these to place your trusses
Roof Mode


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