When programming, it's helpful to use comments to document your code. The same goes for visual programming using the Flume node editor. By default, the node editor allows you to add comment blocks that you can drag around, resize, and recolor. Let's use the final node editor from the previous section as an example.
Comments have no effect on the function of your logic graphs, so they aren't stored with the nodes. Like with nodes, there are two ways to get comemnts in and out of the node editor.
First, you can pass an
onCommentsChange handler to the node editor. This works the same as the normal
onChange handler, but will only be called any time any of the comments change.
As with the
onChange handler, the
onCommentsChange handler may be called quite often. There may be cases where you may not need to save the comments until the user is done editing. For these cases, the node editor exposes an imperative