WARNING: undefined operation (bool * bool) in file allexpressions.scad, line 14
WARNING: undefined operation (bool / bool) in file allexpressions.scad, line 15
WARNING: undefined operation (bool % bool) in file allexpressions.scad, line 16
WARNING: undefined operation (undefined < bool) in file allexpressions.scad, line 17
WARNING: undefined operation (undefined <= bool) in file allexpressions.scad, line 18
WARNING: undefined operation (undefined >= bool) in file allexpressions.scad, line 21
WARNING: undefined operation (undefined > bool) in file allexpressions.scad, line 22
ECHO: x = 2, y = 5
