See one video that shows the building and using of Dr. Jake's OO scale layout, designed in SCARM track planning software. [>>>] Presentation of Dr. Jake’s OO-Scale Layout
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See one video that shows the building and using of Dr. Jake's OO scale layout, designed in SCARM track planning software. [>>>] 
See these sample pictures of British passenger and freight coaches, created with the figures in SCARM by Paul Durrant and download the project file to use them in your layouts. 
This is the OO-scale layout, designed with SCARM by Scott a.k.a. Jukebox. Dimensions: 7m x 4m (23' x 13') around the walls; Complexity: hard.