Found the following HTML validation problems:
Cicerone.html:724:1 (Cicerone.Rd:442): Warning: missing </ul> before </div>
Cicerone.html:222:1 (Cicerone.Rd:121): Warning: <h5> anchor "Usage" already defined
Cicerone.html:244:1 (Cicerone.Rd:141): Warning: <h5> anchor "Arguments" already defined
Cicerone.html:292:1 (Cicerone.Rd:183): Warning: <h5> anchor "Details" already defined
Cicerone.html:307:1 (Cicerone.Rd:192): Warning: <h5> anchor "Usage" already defined
Cicerone.html:313:1 (Cicerone.Rd:196): Warning: <h5> anchor "Arguments" already defined
Cicerone.html:327:1 (Cicerone.Rd:204): Warning: <h5> anchor "Details" already defined
Cicerone.html:342:1 (Cicerone.Rd:213): Warning: <h5> anchor "Usage" already defined
Cicerone.html:348:1 (Cicerone.Rd:217): Warning: <h5> anchor "Arguments" already defined
Cicerone.html:362:1 (Cicerone.Rd:225): Warning: <h5> anchor "Details" already defined
Cicerone.html:377:1 (Cicerone.Rd:234): Warning: <h5> anchor "Usage" already defined
Cicerone.html:383:1 (Cicerone.Rd:238): Warning: <h5> anchor "Arguments" already defined
Cicerone.html:399:1 (Cicerone.Rd:248): Warning: <h5> anchor "Details" already defined
Cicerone.html:414:1 (Cicerone.Rd:257): Warning: <h5> anchor "Usage" already defined
Cicerone.html:420:1 (Cicerone.Rd:261): Warning: <h5> anchor "Arguments" already defined
Cicerone.html:434:1 (Cicerone.Rd:269): Warning: <h5> anchor "Details" already defined
Cicerone.html:449:1 (Cicerone.Rd:278): Warning: <h5> anchor "Usage" already defined
Cicerone.html:455:1 (Cicerone.Rd:282): Warning: <h5> anchor "Arguments" already defined
Cicerone.html:469:1 (Cicerone.Rd:290): Warning: <h5> anchor "Details" already defined
Cicerone.html:484:1 (Cicerone.Rd:299): Warning: <h5> anchor "Usage" already defined
Cicerone.html:490:1 (Cicerone.Rd:303): Warning: <h5> anchor "Arguments" already defined
Cicerone.html:509:1 (Cicerone.Rd:316): Warning: <h5> anchor "Details" already defined
Cicerone.html:524:1 (Cicerone.Rd:325): Warning: <h5> anchor "Usage" already defined
Cicerone.html:530:1 (Cicerone.Rd:329): Warning: <h5> anchor "Arguments" already defined
Cicerone.html:544:1 (Cicerone.Rd:337): Warning: <h5> anchor "Details" already defined
Cicerone.html:559:1 (Cicerone.Rd:346): Warning: <h5> anchor "Usage" already defined
Cicerone.html:565:1 (Cicerone.Rd:350): Warning: <h5> anchor "Arguments" already defined
Cicerone.html:579:1 (Cicerone.Rd:358): Warning: <h5> anchor "Details" already defined
Cicerone.html:594:1 (Cicerone.Rd:367): Warning: <h5> anchor "Usage" already defined
Cicerone.html:600:1 (Cicerone.Rd:371): Warning: <h5> anchor "Arguments" already defined
Cicerone.html:614:1 (Cicerone.Rd:379): Warning: <h5> anchor "Details" already defined
Cicerone.html:629:1 (Cicerone.Rd:388): Warning: <h5> anchor "Usage" already defined
Cicerone.html:635:1 (Cicerone.Rd:392): Warning: <h5> anchor "Arguments" already defined
Cicerone.html:649:1 (Cicerone.Rd:400): Warning: <h5> anchor "Details" already defined
Cicerone.html:664:1 (Cicerone.Rd:409): Warning: <h5> anchor "Usage" already defined
Cicerone.html:670:1 (Cicerone.Rd:413): Warning: <h5> anchor "Arguments" already defined
Cicerone.html:684:1 (Cicerone.Rd:421): Warning: <h5> anchor "Details" already defined
Cicerone.html:701:1 (Cicerone.Rd:431): Warning: <h5> anchor "Usage" already defined
Cicerone.html:707:1 (Cicerone.Rd:435): Warning: <h5> anchor "Arguments" already defined