7.6} Format setting

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 The default, fixed input format can be replaced by a free format using option
 FREE or better GLOBAL. The latter allows to choose free format for both the
 normal input and the geometry input separately, and serves also a few other
 purposes: it can be used to increase the maximum allowed number of geometry
 regions, and to force a calculation to be fully analogue (i.e., simulating
 physical reality as directly as possible, without any biasing to accelerate
 statistical convergence. A more esoteric capability of GLOBAL, used mainly for
 debugging, is to ensure that the random number sequence be exactly reproduced
 even in cases where the geometry tracking algorithm has the possibility to
 follow different logical paths to achieve the same result.

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