### Loading 1. The data should be loaded with different markers and pens. 2. The toolbar should have 5 highlight buttons and one remove highlight button. ### Testing You should be able to: - see different markers class - manually invoke highlight command in console: ``` editor.execute( 'highlight', { class: 'marker' } ); editor.execute( 'highlight', { class: 'marker-green' } ); editor.execute( 'highlight', { class: 'marker-pink' } ); editor.execute( 'highlight', { class: 'pen-red' } ); editor.execute( 'highlight', { class: 'pen-green' } ); ```