Found the following validation problem for the NEWS.Rd HTML conversion:
NEWS.html:77:1 (inst/NEWS.Rd:33): Warning: <h4> anchor "changed" already defined
NEWS.html:160:1 (inst/NEWS.Rd:80): Warning: <h4> anchor "fixed" already defined
NEWS.html:172:1 (inst/NEWS.Rd:86): Warning: <h4> anchor "added" already defined
NEWS.html:188:1 (inst/NEWS.Rd:94): Warning: <h4> anchor "fixed" already defined
NEWS.html:200:1 (inst/NEWS.Rd:100): Warning: <h4> anchor "changed" already defined
NEWS.html:216:1 (inst/NEWS.Rd:108): Warning: <h4> anchor "fixed" already defined
NEWS.html:229:1 (inst/NEWS.Rd:115): Warning: <h4> anchor "added" already defined
NEWS.html:256:1 (inst/NEWS.Rd:126): Warning: <h4> anchor "changed" already defined
NEWS.html:283:1 (inst/NEWS.Rd:139): Warning: <h4> anchor "changed" already defined
NEWS.html:294:1 (inst/NEWS.Rd:144): Warning: <h4> anchor "fixed" already defined
NEWS.html:318:1 (inst/NEWS.Rd:156): Warning: <h4> anchor "fixed" already defined
NEWS.html:330:1 (inst/NEWS.Rd:162): Warning: <h4> anchor "changed" already defined
NEWS.html:346:1 (inst/NEWS.Rd:170): Warning: <h4> anchor "added" already defined
NEWS.html:363:1 (inst/NEWS.Rd:179): Warning: <h4> anchor "changed" already defined
NEWS.html:382:1 (inst/NEWS.Rd:188): Warning: <h4> anchor "changed" already defined
NEWS.html:399:1 (inst/NEWS.Rd:197): Warning: <h4> anchor "added" already defined
NEWS.html:415:1 (inst/NEWS.Rd:205): Warning: <h4> anchor "changed" already defined
NEWS.html:426:1 (inst/NEWS.Rd:210): Warning: <h4> anchor "added" already defined
NEWS.html:444:1 (inst/NEWS.Rd:218): Warning: <h4> anchor "added" already defined
NEWS.html:463:1 (inst/NEWS.Rd:227): Warning: <h4> anchor "added" already defined
NEWS.html:480:1 (inst/NEWS.Rd:234): Warning: <h4> anchor "fixed" already defined
NEWS.html:505:1 (inst/NEWS.Rd:247): Warning: <h4> anchor "changed" already defined
NEWS.html:521:1 (inst/NEWS.Rd:255): Warning: <h4> anchor "fixed" already defined
NEWS.html:533:1 (inst/NEWS.Rd:261): Warning: <h4> anchor "changed" already defined
NEWS.html:549:1 (inst/NEWS.Rd:269): Warning: <h4> anchor "added" already defined
NEWS.html:561:1 (inst/NEWS.Rd:275): Warning: <h4> anchor "changed" already defined
NEWS.html:576:1 (inst/NEWS.Rd:282): Warning: <h4> anchor "added" already defined
NEWS.html:590:1 (inst/NEWS.Rd:288): Warning: <h4> anchor "changed" already defined
NEWS.html:606:1 (inst/NEWS.Rd:296): Warning: <h4> anchor "fixed" already defined