A modified version of the program MAD to improve the efficiency of tracking studies

A set of new commands has been added to the program MAD to enhance the flexibility of tracking studies, both for LHC and for LEP. The new features include an automatic search of dynamic aperture and the calculation of early indicators, such as Lzapunov exponent, smear and detuning ' la Laskar. In conjunction with more conventional MAD variables, such as normal mode chromaticities and anharmonicities, these quantities can be saved in special tables to generate correlation plots or can be used as global matching constrainsts, for a numerical optimiasation of machine parameters related to the dynamic aperture.