SXF file input and output

The command 
SXFWRITE,FILE=filename;
writes the currently (i.e. last) USEd sequence with all alignment and field errors in [SXF] format onto the file specified. This then represents one "instance" of the sequence, where all parameters are given by numbers rather than expressions; the file can be read by other programs to get a complete picture of the sequence.

The command 

SXFREAD,FILE=filename;
reads a file in SXF format, stores the sequence away and USEs it(!) in order to keep the existing errors. The following does therefore work:

Example: 

job 1:

! define sequence MYSEQU

use,mysequ;

! add alignment errors and field errors

sxfwrite,file=file;
stop;

job 2:

sxfread,file=file;
twiss;
stop;
hansg, January 24, 1997