Found the following validation problem for the NEWS.Rd HTML conversion:
NEWS.html:681:1 (inst/NEWS.Rd:394): Warning: missing </ul> before </div>
NEWS.html:58:1 (inst/NEWS.Rd:26): Warning: <h4> anchor "Bug-Fixes" already defined
NEWS.html:73:1 (inst/NEWS.Rd:34): Warning: <h4> anchor "Bug-Fixes" already defined
NEWS.html:84:1 (inst/NEWS.Rd:39): Warning: <h4> anchor "Notes" already defined
NEWS.html:102:1 (inst/NEWS.Rd:49): Warning: <h4> anchor "Notes" already defined
NEWS.html:117:1 (inst/NEWS.Rd:57): Warning: <h4> anchor "Notes" already defined
NEWS.html:132:1 (inst/NEWS.Rd:65): Warning: <h4> anchor "Notes" already defined
NEWS.html:153:1 (inst/NEWS.Rd:77): Warning: <h4> anchor "Notes" already defined
NEWS.html:194:1 (inst/NEWS.Rd:100): Warning: <h4> anchor "Bug-Fixes" already defined
NEWS.html:205:1 (inst/NEWS.Rd:105): Warning: <h4> anchor "Notes" already defined
NEWS.html:223:1 (inst/NEWS.Rd:115): Warning: <h4> anchor "New-Features" already defined
NEWS.html:234:1 (inst/NEWS.Rd:120): Warning: <h4> anchor "Bug-Fixes" already defined
NEWS.html:249:1 (inst/NEWS.Rd:128): Warning: <h4> anchor "New-Features" already defined
NEWS.html:260:1 (inst/NEWS.Rd:133): Warning: <h4> anchor "Bug-Fixes" already defined
NEWS.html:275:1 (inst/NEWS.Rd:141): Warning: <h4> anchor "Notes" already defined
NEWS.html:290:1 (inst/NEWS.Rd:149): Warning: <h4> anchor "New-Features" already defined
NEWS.html:315:1 (inst/NEWS.Rd:165): Warning: <h4> anchor "Notes" already defined
NEWS.html:334:1 (inst/NEWS.Rd:176): Warning: <h4> anchor "New-Features" already defined
NEWS.html:350:1 (inst/NEWS.Rd:185): Warning: <h4> anchor "Bug-Fixes" already defined
NEWS.html:363:1 (inst/NEWS.Rd:192): Warning: <h4> anchor "Notes" already defined
NEWS.html:379:1 (inst/NEWS.Rd:201): Warning: <h4> anchor "New-Features" already defined
NEWS.html:408:1 (inst/NEWS.Rd:221): Warning: <h4> anchor "Notes" already defined
NEWS.html:434:1 (inst/NEWS.Rd:238): Warning: <h4> anchor "New-Features" already defined
NEWS.html:458:1 (inst/NEWS.Rd:254): Warning: <h4> anchor "Notes" already defined
NEWS.html:490:1 (inst/NEWS.Rd:272): Warning: <h4> anchor "New-Features" already defined
NEWS.html:512:1 (inst/NEWS.Rd:286): Warning: <h4> anchor "C-Level-Facilities" already defined
NEWS.html:525:1 (inst/NEWS.Rd:293): Warning: <h4> anchor "Bug-Fixes" already defined
NEWS.html:546:1 (inst/NEWS.Rd:306): Warning: <h4> anchor "New-Features" already defined
NEWS.html:563:1 (inst/NEWS.Rd:316): Warning: <h4> anchor "Bug-Fixes" already defined
NEWS.html:582:1 (inst/NEWS.Rd:327): Warning: <h4> anchor "New-Features" already defined
NEWS.html:602:1 (inst/NEWS.Rd:340): Warning: <h4> anchor "Bug-Fixes" already defined