how to edit names (#244)
If I want to edit elements in a diagram I have sometimes to use F2 and sometimes double click.
At a double click sometimes the properties window is opened, sometimes I can edit the text right into the textbox.
Its a littlebit confusing that F2 doesn't always work (for instance in a 'loop node' for the 'for, while and do' sections).
Every text that is shown in a diagram should be editable in the diagram itself, without a popup, by doubleclick and F2.