Some menu-items are meaningful only for certain absorption correction programs.
Keyword to invoke the de Meulenaer & Tompa analytical correction for absorption. Mu is the linear absorption coefficient and should be given in the reciprocal unit in which the crystal dimensions are given (preferably mm). DIRCOS is optional. Its function is to copy the input direction cosines to the output.
FACE h k l d
Crystal face. d is the distance of the plane to an arbitrarily choosen origin inside the crystal.
Instruction for the deletion of a face from the previously supplied set.