Highlighters can be used to provide visual emphasis to an element; during user interactions for example.

In the above demo, we listen to the paper for the cell:pointerclick event, then highlight the cell that was clicked.

paper.on('cell:pointerclick', function(cellView) {
    cellView.highlight();
});

As you can see it is possible to highlight a cell as follows:

cellView.highlight();

Unhighlighting a cell is simple too:

cellView.unhighlight();

To highlight a cell using a specific highlighter (and options):

cellView.highlight(null/* defaults to cellView.el */, {
    highlighter: {
        name: 'stroke',
        options: {
            width: 3
        }
    }
});

Or you can specify just the highlighter's name (its default options will be used):

cellView.highlight(null/* defaults to cellView.el */, {
    highlighter: 'stroke'
});