some comments

src/Calendar.constraints.js

@@ -274,6 +274,9 @@ Calendar.prototype.eventRangesToEventFootprints = function(eventRanges) {
 };
 
 
+/*
+TODO: somehow more DRY with Grid::eventRangeToEventFootprints
+*/
 Calendar.prototype.eventRangeToEventFootprints = function(eventRange) {
 	return [
 		new EventFootprint(

src/common/Grid.events.js

@@ -1076,6 +1076,7 @@ Grid.mixin({
 	// eventSpan - { start, end, isStart, isEnd, otherthings... }
 	// Subclasses can override.
 	// Subclasses are obligated to forward eventRange.isStart/isEnd to the resulting spans.
+	// TODO: somehow more DRY with Calendar::eventRangeToEventFootprints
 	eventRangeToEventFootprints: function(eventRange) {
 		return [
 			new EventFootprint(