set visibility of MathGraphics at group level
set visibility of MathGraphics at group level

ChristopherChudzicki/math3d,ChristopherChudzicki/math3d,stardust66/math3d,ChristopherChudzicki/math3d,stardust66/math3d,stardust66/math3d,ChristopherChudzicki/math3d,stardust66/math3d