Click to edit, select to apply effect, click items of toolbar to toggle effects. If you want to customize the toolbar to fit your own project, you can instantiate Pen constructor with an options object like #1.3. You can set options.titles to an object with properties that match the toolbar actions. The value of each property will be used as the title attribute on the icon. Most browsers will display the title attribute as a tooltip when the mouse hovers over the icon. By default, Pen...