The following describes the format of MAD 8 output file types, *_twiss.tape and *_survey.tape.

_twiss.tape:
------------
Each lattice element is described in a block of 5 mines:  

line | contents
1      element-typeElement-Name Length elem p1 p2 p3 aperture engineering-type Energy
2      p4 p5 p6 p7 p8 Formal-device-name(82:105)
3      alphax betax mux dx dpx   
4      alphay betay muy dy dpy   
5      x px y py t pt            [ reference particle orbit centroid ]

_survey.tape:
-------------
Each lattice element is described in a block of 4 lines:
1     element-typeElement-Name Length elem p1 p2 p3 aperture engineering-type Energy
2     p4 p5 p6 p7 p8 
3     x y z s                       [ geometry coordinates ]
4     yaw pitch roll