[Therion] Wall visibility affecting lox model

A curious thing I just discovered. One of my scraps was not showing the walls properly in the lox model. The cause was one wall line being set to invisible using the syntax: line wall:invisible If I changed this to: line wall -visibility off Now the lox model looks fine. I would have expected both these ways of hiding a wall line in the PDF would be processed the same way (both look the same in the PDF). But clearly something different is happening in the lox model. Footleg