GET
  FILE='G:\UBC Library Final Documentation\Boston New England\Boston New England Hospital 1872-1900_mo.sav'.

WRITE OUTFILE='G:\UBC Library Final Documentation\Boston New England\Boston New England_Fixed '+
    'ASCII.dat'
  TABLE /ALL.

Write will generate the following

Variable          Rec   Start     End  Format
age                 1       1       2  F2.0
byear               1       3       6  F4.0
resicodr            1       7       7  F1.0
marstat             1       8       8  F1.0
prevmisc            1       9      10  F2.0
nuofpreg            1      11      12  F2.0
sex                 1      13      15  F3.0
weight              1      16      21  F6.1
prematur            1      22      22  F1.0
comment1            1      23      23  F1.0
comment2            1      24      24  F1.0
season              1      25      32  F8.0
occupat             1      33      40  F8.0
EXECUTE.