puts "================================="
puts "COMMON of OCC212-2.brep and  OCC212-1.brep"
puts "Case is duplicate of chl 918 CIN001_a5.rle, bug OCC212 "
puts "================================="

restore [locate_data_file OCC212-1.brep] a
restore [locate_data_file OCC212-2.brep] b

bop b a 
bopcommon result

set square 314.301