When you click to choose an object and more than one object is near the clicked point, you were before asked to chosse between the first and the las object.
Now a dialog box pops up allowing you to choose every object near the cliked spot just as underneath (the question marks represent unnamed objects).
In the dialog box for the choice of an arc angle, commun angle values are now available.
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Use mathgraph32 online on : this page.