Since the input format does not contain velocity information, the output snapshot file has zero velocities. By differencing two adjacent snapshots, this program could derive velocities compute new positions at the midpoint. This is currently not done.
No snapshot selection yet. Keywords times= (to select by time ranges) and select= (to select by snapshot numbers) are anticipated for this.
Reading is done rather liberally. For example, the header is assumed to contain a run id (a string on the first non-blank line), followed by 30 integers and 32 reals. The data (4 integers per line) is followed by two blank lines, but the number of blank lines is actually irrelevant (could even be 0).
12-jul-94 V1.0 Created Peter Teuben
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