Found the following validation problem for the NEWS.Rd HTML conversion:
NEWS.html:41:1 (inst/NEWS.Rd:13): Warning: <h4> anchor "fixed" already defined
NEWS.html:64:1 (inst/NEWS.Rd:26): Warning: <h4> anchor "fixed" already defined
NEWS.html:128:1 (inst/NEWS.Rd:58): Warning: <h4> anchor "fixed" already defined
NEWS.html:159:1 (inst/NEWS.Rd:75): Warning: <h4> anchor "added" already defined
NEWS.html:170:1 (inst/NEWS.Rd:80): Warning: <h4> anchor "changed" already defined
NEWS.html:200:1 (inst/NEWS.Rd:94): Warning: <h4> anchor "fixed" already defined
NEWS.html:228:1 (inst/NEWS.Rd:108): Warning: <h4> anchor "changed" already defined
NEWS.html:247:1 (inst/NEWS.Rd:117): Warning: <h4> anchor "fixed" already defined
NEWS.html:263:1 (inst/NEWS.Rd:125): Warning: <h4> anchor "fixed" already defined
NEWS.html:290:1 (inst/NEWS.Rd:138): Warning: <h4> anchor "fixed" already defined
NEWS.html:332:1 (inst/NEWS.Rd:160): Warning: <h4> anchor "changed" already defined
NEWS.html:374:1 (inst/NEWS.Rd:182): Warning: <h4> anchor "added" already defined
NEWS.html:430:1 (inst/NEWS.Rd:212): Warning: <h4> anchor "removed" already defined
NEWS.html:463:1 (inst/NEWS.Rd:231): Warning: <h4> anchor "fixed" already defined
NEWS.html:485:1 (inst/NEWS.Rd:241): Warning: <h4> anchor "added" already defined
NEWS.html:535:1 (inst/NEWS.Rd:265): Warning: <h4> anchor "changed" already defined
NEWS.html:606:1 (inst/NEWS.Rd:302): Warning: <h4> anchor "changed" already defined
NEWS.html:635:1 (inst/NEWS.Rd:321): Warning: <h4> anchor "fixed" already defined
NEWS.html:653:1 (inst/NEWS.Rd:331): Warning: <h4> anchor "fixed" already defined
NEWS.html:667:1 (inst/NEWS.Rd:337): Warning: <h4> anchor "changed" already defined
NEWS.html:687:1 (inst/NEWS.Rd:347): Warning: <h4> anchor "fixed" already defined
NEWS.html:702:1 (inst/NEWS.Rd:354): Warning: <h4> anchor "changed" already defined
NEWS.html:734:1 (inst/NEWS.Rd:370): Warning: <h4> anchor "added" already defined
NEWS.html:769:1 (inst/NEWS.Rd:389): Warning: <h4> anchor "fixed" already defined
NEWS.html:793:1 (inst/NEWS.Rd:401): Warning: <h4> anchor "changed" already defined
NEWS.html:820:1 (inst/NEWS.Rd:418): Warning: <h4> anchor "added" already defined
NEWS.html:835:1 (inst/NEWS.Rd:425): Warning: <h4> anchor "removed" already defined
NEWS.html:853:1 (inst/NEWS.Rd:435): Warning: <h4> anchor "fixed" already defined
NEWS.html:871:1 (inst/NEWS.Rd:445): Warning: <h4> anchor "changed" already defined
NEWS.html:938:1 (inst/NEWS.Rd:486): Warning: <h4> anchor "added" already defined
NEWS.html:993:1 (inst/NEWS.Rd:515): Warning: <h4> anchor "removed" already defined
NEWS.html:1020:1 (inst/NEWS.Rd:532): Warning: <h4> anchor "fixed" already defined
NEWS.html:1037:1 (inst/NEWS.Rd:541): Warning: <h4> anchor "changed" already defined
NEWS.html:1072:1 (inst/NEWS.Rd:560): Warning: <h4> anchor "added" already defined
NEWS.html:1085:1 (inst/NEWS.Rd:567): Warning: <h4> anchor "removed" already defined
NEWS.html:1100:1 (inst/NEWS.Rd:574): Warning: <h4> anchor "fixed" already defined
NEWS.html:1112:1 (inst/NEWS.Rd:580): Warning: <h4> anchor "changed" already defined
NEWS.html:1135:1 (inst/NEWS.Rd:593): Warning: <h4> anchor "fixed" already defined
NEWS.html:1172:1 (inst/NEWS.Rd:610): Warning: <h4> anchor "changed" already defined
NEWS.html:1194:1 (inst/NEWS.Rd:620): Warning: <h4> anchor "added" already defined
NEWS.html:1215:1 (inst/NEWS.Rd:629): Warning: <h4> anchor "fixed" already defined
NEWS.html:1239:1 (inst/NEWS.Rd:641): Warning: <h4> anchor "changed" already defined
NEWS.html:1297:1 (inst/NEWS.Rd:671): Warning: <h4> anchor "added" already defined
NEWS.html:1335:1 (inst/NEWS.Rd:691): Warning: <h4> anchor "fixed" already defined
NEWS.html:1355:1 (inst/NEWS.Rd:701): Warning: <h4> anchor "added" already defined
NEWS.html:1385:1 (inst/NEWS.Rd:717): Warning: <h4> anchor "fixed" already defined
NEWS.html:1407:1 (inst/NEWS.Rd:727): Warning: <h4> anchor "changed" already defined
NEWS.html:1426:1 (inst/NEWS.Rd:736): Warning: <h4> anchor "added" already defined
NEWS.html:1448:1 (inst/NEWS.Rd:746): Warning: <h4> anchor "fixed" already defined
NEWS.html:1469:1 (inst/NEWS.Rd:757): Warning: <h4> anchor "added" already defined
NEWS.html:1485:1 (inst/NEWS.Rd:765): Warning: <h4> anchor "fixed" already defined
NEWS.html:1500:1 (inst/NEWS.Rd:772): Warning: <h4> anchor "changed" already defined
NEWS.html:1519:1 (inst/NEWS.Rd:781): Warning: <h4> anchor "added" already defined
NEWS.html:1539:1 (inst/NEWS.Rd:793): Warning: <h4> anchor "fixed" already defined
NEWS.html:1554:1 (inst/NEWS.Rd:800): Warning: <h4> anchor "changed" already defined
NEWS.html:1581:1 (inst/NEWS.Rd:813): Warning: <h4> anchor "added" already defined
NEWS.html:1600:1 (inst/NEWS.Rd:822): Warning: <h4> anchor "fixed" already defined
NEWS.html:1634:1 (inst/NEWS.Rd:838): Warning: <h4> anchor "changed" already defined
NEWS.html:1649:1 (inst/NEWS.Rd:845): Warning: <h4> anchor "added" already defined
NEWS.html:1671:1 (inst/NEWS.Rd:855): Warning: <h4> anchor "changed" already defined
NEWS.html:1690:1 (inst/NEWS.Rd:864): Warning: <h4> anchor "added" already defined
NEWS.html:1712:1 (inst/NEWS.Rd:874): Warning: <h4> anchor "fixed" already defined
NEWS.html:1729:1 (inst/NEWS.Rd:883): Warning: <h4> anchor "fixed" already defined
NEWS.html:1745:1 (inst/NEWS.Rd:891): Warning: <h4> anchor "changed" already defined
NEWS.html:1779:1 (inst/NEWS.Rd:907): Warning: <h4> anchor "added" already defined
NEWS.html:1791:1 (inst/NEWS.Rd:913): Warning: <h4> anchor "removed" already defined
NEWS.html:1809:1 (inst/NEWS.Rd:923): Warning: <h4> anchor "fixed" already defined
NEWS.html:1828:1 (inst/NEWS.Rd:932): Warning: <h4> anchor "changed" already defined
NEWS.html:1840:1 (inst/NEWS.Rd:938): Warning: <h4> anchor "added" already defined
NEWS.html:1868:1 (inst/NEWS.Rd:950): Warning: <h4> anchor "fixed" already defined
NEWS.html:1892:1 (inst/NEWS.Rd:962): Warning: <h4> anchor "changed" already defined
NEWS.html:1949:1 (inst/NEWS.Rd:993): Warning: <h4> anchor "added" already defined
NEWS.html:1995:1 (inst/NEWS.Rd:1015): Warning: <h4> anchor "fixed" already defined
NEWS.html:2011:1 (inst/NEWS.Rd:1023): Warning: <h4> anchor "fixed" already defined
NEWS.html:2030:1 (inst/NEWS.Rd:1032): Warning: <h4> anchor "changed" already defined
NEWS.html:2051:1 (inst/NEWS.Rd:1043): Warning: <h4> anchor "added" already defined
NEWS.html:2092:1 (inst/NEWS.Rd:1064): Warning: <h4> anchor "added" already defined
NEWS.html:2107:1 (inst/NEWS.Rd:1071): Warning: <h4> anchor "fixed" already defined
NEWS.html:2126:1 (inst/NEWS.Rd:1080): Warning: <h4> anchor "changed" already defined
NEWS.html:2149:1 (inst/NEWS.Rd:1091): Warning: <h4> anchor "fixed" already defined
NEWS.html:2164:1 (inst/NEWS.Rd:1098): Warning: <h4> anchor "changed" already defined
NEWS.html:2177:1 (inst/NEWS.Rd:1105): Warning: <h4> anchor "fixed" already defined
NEWS.html:2193:1 (inst/NEWS.Rd:1113): Warning: <h4> anchor "added" already defined
NEWS.html:2205:1 (inst/NEWS.Rd:1119): Warning: <h4> anchor "changed" already defined
NEWS.html:2228:1 (inst/NEWS.Rd:1130): Warning: <h4> anchor "fixed" already defined
NEWS.html:2246:1 (inst/NEWS.Rd:1138): Warning: <h4> anchor "changed" already defined
NEWS.html:2257:1 (inst/NEWS.Rd:1143): Warning: <h4> anchor "added" already defined
NEWS.html:2277:1 (inst/NEWS.Rd:1153): Warning: <h4> anchor "added" already defined
NEWS.html:2288:1 (inst/NEWS.Rd:1158): Warning: <h4> anchor "fixed" already defined
NEWS.html:2304:1 (inst/NEWS.Rd:1166): Warning: <h4> anchor "added" already defined
NEWS.html:2318:1 (inst/NEWS.Rd:1172): Warning: <h4> anchor "fixed" already defined