Found the following validation problem for the NEWS.Rd HTML conversion:
NEWS.html:505:1 (inst/NEWS.Rd:256): Warning: missing </ul> before </div>
NEWS.html:40:1 (inst/NEWS.Rd:13): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:73:1 (inst/NEWS.Rd:32): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:93:1 (inst/NEWS.Rd:42): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:115:1 (inst/NEWS.Rd:55): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:134:1 (inst/NEWS.Rd:65): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:150:1 (inst/NEWS.Rd:74): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:165:1 (inst/NEWS.Rd:81): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:180:1 (inst/NEWS.Rd:89): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:201:1 (inst/NEWS.Rd:101): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:215:1 (inst/NEWS.Rd:107): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:234:1 (inst/NEWS.Rd:117): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:250:1 (inst/NEWS.Rd:126): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:265:1 (inst/NEWS.Rd:134): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:280:1 (inst/NEWS.Rd:142): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:299:1 (inst/NEWS.Rd:151): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:319:1 (inst/NEWS.Rd:162): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:340:1 (inst/NEWS.Rd:175): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:363:1 (inst/NEWS.Rd:187): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:383:1 (inst/NEWS.Rd:197): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:401:1 (inst/NEWS.Rd:206): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:412:1 (inst/NEWS.Rd:211): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:433:1 (inst/NEWS.Rd:221): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:444:1 (inst/NEWS.Rd:226): Warning: <h4> anchor "BUG-FIXES" already defined
NEWS.html:459:1 (inst/NEWS.Rd:234): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:474:1 (inst/NEWS.Rd:242): Warning: <h4> anchor "NEW-FEATURES" already defined
NEWS.html:490:1 (inst/NEWS.Rd:251): Warning: <h4> anchor "NEW-FEATURES" already defined