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1	<head>
2	<title>SXF</title>
3	<!-- Changed by: Chris ISELIN, 27-Jan-1997 -->
4	<!-- Changed by: Hans Grote, 4-Dec-2002 -->
5	</head>
6
7	<body bgcolor="#ffffff">
8
9	<h2><a name=sxf>SXF file input and output</a></h2>
10	The command
11	<pre>
12	SXFWRITE,FILE=filename;
13	</pre>
14	writes the currently (i.e. last) USEd sequence with all alignment
15	and field errors in <a
16	href="../Introduction/bibliography.html#SXF">[SXF]</a> format onto the
17	file specified. This then represents one "instance" of the sequence,
18	where all parameters are given by numbers rather than expressions; the
19	file can be read by other programs to get a complete picture of the
20	sequence.
21	<p>
22	The command
23	<pre>
24	SXFREAD,FILE=filename;
25	</pre>
26	reads a file in SXF format, stores the sequence away and USEs it(!) in order
27	to keep the existing errors. The following does therefore work:
28	<p>
29	Example:
30	<pre>
31	job 1:
32
33	! define sequence MYSEQU
34
35	use,mysequ;
36
37	! add alignment errors and field errors
38
39	sxfwrite,file=file;
40	stop;
41
42	job 2:
43
44	sxfread,file=file;
45	twiss;
46	stop;
47
48	</pre>
49
50	<address>
51	<a href="http://www.cern.ch/Hans.Grote/hansg_sign.html">hansg</a>,
52	January 24, 1997
53	</address>
54
55	</body>

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