Commit 158c4a5d authored by kraus's avatar kraus
Browse files

Update track.asciidoc

parent ce9e741b
......@@ -241,7 +241,10 @@ BOUNDARYGEOMETRY::
+
TRACKBACK::
The particles are tracked backward in time if `TRUE`.
The particles are tracked backward in time if `TRACKBACK=TRUE`. _OPAL_ starts at
`ZSTART` and tracks the bunch back in time. It changes the size of the time step
when it crosses the thresholds given in the `ZSTOP` attribute of the `TRACK`
command and stops once it reaches the lowest item of `ZSTOP`.
Only available in _OPAL-t_. Default is `FALSE`.
Example:
......
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