Question: Plotting surfaces in Maple with constraints

Dear All, Does anybody know how to plot a surface in 3d with only those points which satisfy a constraint? In particular I'm plotting the surface defined by the equation F(beta,Omega,delta)=0 using implicitplot3d. Unfortunately, I want to command Maple to leave out any points which violate the inequality h(beta,Omega)>0. Does anybody know how to do this? cmichael
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