# RCSid $Id: rect_opening.rad,v 1.1 2018/11/17 22:09:12 greg Exp $ # Rectangular opening cut in end wall !genprism wall_mat end_wall 10 -.1 -.1 -.1 5.1 3.1 5.1 3.1 -.1 -.1 -.1 \ 1 1 2 1 2 4 1 4 1 1 -l 0 0 .2 -c \ | xform -ry -90 -t -8 0 0