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Industry standard charged particle optics software
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SIMION 8.0 Issues/Bugs/Enhancements

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Issue I357 [80,high,resolved]
  Prevent simion.command() calls from having side-effects such as
    leaving additional PAs around in memory and parameters modified.
  Reported by rbalthazor-20070124 and bud
    In SIMION 8.0.x versions prior to 8.0.2, at the completion of
    in-process Lua calls to "simion.command(...)" commands, SIMION
    did not properly unload PAs created in memory.  Commands could also
    affect and be affected by the current refine and fly parameters.
    This could result in memory exhaustion and hard to diagnose
    run-time side-effects between commands.
    However, equivalent commands executed from the command-line interface
    (e.g. "os.execute([['c:/program files/simion-8.0/simion.exe --nogui ...']])")
    are not affected since that creates a new, clean SIMION process
    for each command.
    Starting in 8.0.2, all PAs created in memory by a
    "simion.command(...)" command are unloaded after the command
    finishes (i.e. no difference is seen in the PA list on the main
    screen before and after a command runs).  Also, default command
    parameters are now localized to defaults, which means that omitted
    default parameters are not affected by the current values prior to
    running, nor do included parameters affect the current values after
    running. In short, side-effects are eliminated.

    One exception to this rule is the "fly" command, which will also
    entirely clear any non-empty PA list and particle definitions
    after (and before) running.  This is designed to minimize side
    effects given technical limitations (that may be removed in the
    future), but it generally is not expected to present a problem.
    The "fly" command is currently prevently from executing in the
    View screen for this reason.

  Original report:
  Workaround in 8.0.1:
    (1) Invoke a new SIMION process for each command,
        e.g. os.execute([['c:/program files/simion-8.0/simion.exe --nogui ...']])
        rather than an in-process simion.command("...") command.
  Affects: 8.0.0-8.0.1.
  Resolved in 8.0.2.

Issue I357 [programming,med-high,resolved]
  run_stop() now disables window frame (prevents other user actions)
  and properly functions in non-GUI batch mode.
  Affects: 8.0.0-8.0.1.
  Resolved in 8.0.2.

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