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Add comment to removeOn() code.
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@ -325,6 +325,8 @@ var Tool = this.Tool = PaperScopeItem.extend(/** @lends Tool# */{
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if (set) {
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if (set) {
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for (var id in set) {
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for (var id in set) {
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var item = set[id];
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var item = set[id];
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// If we remove this item, we also need to erase it from all
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// other sets.
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for (var key in sets) {
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for (var key in sets) {
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var other = sets[key];
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var other = sets[key];
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if (other && other != set && other[item._id])
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if (other && other != set && other[item._id])
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