transition.each(function) Invokes the specified function for each selected element, passing in the current

transition.node() Returns the first (non-null) element in this transition. If the transition is empty, returns null. Equivalent

transition.attr(name, value) For each selected element, assigns the

transition.tween(name[, value]) For each selected element, assigns the tween with the specified name

selection.transition([name]) Returns a new transition on the given selection with the specified name

transition.attrTween(name[, factory]) If factory is specified and not null, assigns the attribute

transition.select(selector) For each selected element, selects the first descendant element that matches the specified

transition.call(function[, arguments…]) Invokes the specified function exactly once, passing in this