In a cascading telescopic configuration ( potentially allowing wider entryways within limited space ) , the doors run on independent tracks so that while open , they are tucked behind one another , and while closed , they form cascading layers on one side .
In a cascading configuration ( potentially allowing wider entryways within limited space ) , the doors run on independent tracks so that while open , they are tucked behind one another , and while closed , they form cascading layers on one side .