place an activity indicator (all ajax/pure js activity)
processing the clicks on the prototype creator takes time, feedback that a mouse click has been recognized by the program is necessary
it's unclear, whether a function (e.g. redo) works in the current situation and just takes time or whether it does not work and thus, I should not expect something to happen (a simple hourglass or animated gif somewhere might do it)
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tobias.vogel
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tobias.vogel commented
suddenly there is one in the lower right... has it been there before?