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Through the menu Options, the user can change a couple of KTsp's basic parameters. These changes are saved automatically on exit. KTsp will remember them on its next launch. There is no need to save them explicitely.
If the user logs out from KDE while KTsp is optimizing a TSP it saves its internal state and will resume optimizing when the user logs in again. KDE will restore KTsp's main window with the correct size on the correct desktop. KTsp then reads its saved data and restore the internal state it has been in at the end of the last session.
If KTsp is engaged in a lengthy optimization there is no need for the user to wait until it is ready. There is no need to quit KTsp, either. Just log out. When you log in again KTsp will finish its task.
No magic involved. ;-)
There are three graphical elements on the main window of KTsp. The upper left Widget shows how the course length of the TSP (inverse quality) decreases during an optimization run. The upper right widget shows the course length for all performed optimization runs. The progress bar at the bottom shows the perventages of the total number of runs performed so far.
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