Alignment buttons on toolbar

I have my toolbar setup as needed using the following: 

config.toolbar_Content = [
        { name: 'document',     items:     [ 'Source' ] },
        { name: 'clipboard',     groups: [ 'clipboard', 'undo' ],
                                items:     [ 'Cut', 'Copy', 'Paste', 'PasteText', 'PasteFromWord', '-', 'Undo', 'Redo' ] },
        { name: 'clipboard',     items:     [ 'Link', 'Unlink', 'Anchor' ] },
        '/',
        { name: 'insert',         items:     [ 'Table', 'HorizontalRule', 'SpecialChar' ] },
        { name: 'paragraph',     groups: [ 'list', 'indent', 'blocks', 'align' ],
                                items:     [ 'NumberedList', 'BulletedList', '-', 'Outdent', 'Indent', '-', 'Blockquote' ] },
        { name: 'styles',         items:     [ 'Styles' ] }
    ];

I do not specify any groups using config.toolbarGroups.

I am missing the alignment buttons.  I know they are installed because if I just show the full/default toolbar they are there.

I had no luck trying to find the name for them online at the full toolbar docs: http://nightly.ckeditor.com/13-06-18-13-05/standard/samples/plugins/toolbar/toolbar.html#fullToolbar

In fact, the buttons aren't even on the online sample of a full toolbar.
Anyone able to able to help me figure out my (probably) obvious mistake?