Found the following HTML validation problems:
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xtdml.html:247:1 (xtdml.Rd:179): Warning: <h5> anchor "Usage" already defined
xtdml.html:293:1 (xtdml.Rd:209): Warning: <h5> anchor "Usage" already defined
xtdml.html:299:1 (xtdml.Rd:213): Warning: <h5> anchor "Returns" already defined
xtdml.html:322:1 (xtdml.Rd:228): Warning: <h5> anchor "Usage" already defined
xtdml.html:334:1 (xtdml.Rd:238): Warning: <h5> anchor "Arguments" already defined
xtdml.html:405:1 (xtdml.Rd:290): Warning: <h5> anchor "Returns" already defined
xtdml.html:422:1 (xtdml.Rd:299): Warning: <h5> anchor "Usage" already defined
xtdml.html:428:1 (xtdml.Rd:303): Warning: <h5> anchor "Arguments" already defined
xtdml.html:452:1 (xtdml.Rd:317): Warning: <h5> anchor "Usage" already defined
xtdml.html:458:1 (xtdml.Rd:321): Warning: <h5> anchor "Arguments" already defined
xtdml.html:482:1 (xtdml.Rd:339): Warning: <h5> anchor "Returns" already defined
xtdml.html:499:1 (xtdml.Rd:348): Warning: <h5> anchor "Usage" already defined
xtdml.html:505:1 (xtdml.Rd:352): Warning: <h5> anchor "Returns" already defined
xtdml.html:522:1 (xtdml.Rd:361): Warning: <h5> anchor "Usage" already defined
xtdml.html:528:1 (xtdml.Rd:365): Warning: <h5> anchor "Returns" already defined
xtdml.html:548:1 (xtdml.Rd:377): Warning: <h5> anchor "Usage" already defined
xtdml.html:559:1 (xtdml.Rd:386): Warning: <h5> anchor "Arguments" already defined
xtdml.html:591:1 (xtdml.Rd:412): Warning: <h5> anchor "Returns" already defined
xtdml.html:608:1 (xtdml.Rd:421): Warning: <h5> anchor "Usage" already defined
xtdml.html:614:1 (xtdml.Rd:425): Warning: <h5> anchor "Arguments" already defined
xtdml.html:628:1 (xtdml.Rd:433): Warning: <h5> anchor "Returns" already defined
xtdml.html:645:1 (xtdml.Rd:442): Warning: <h5> anchor "Usage" already defined
xtdml.html:651:1 (xtdml.Rd:446): Warning: <h5> anchor "Arguments" already defined
xtdml_data.html:271:1 (xtdml_data.Rd:182): Warning: missing </ul> before </div>
xtdml_data.html:199:1 (xtdml_data.Rd:140): Warning: <h5> anchor "Usage" already defined
xtdml_data.html:218:1 (xtdml_data.Rd:153): Warning: <h5> anchor "Usage" already defined
xtdml_data.html:224:1 (xtdml_data.Rd:157): Warning: <h5> anchor "Arguments" already defined
xtdml_data.html:248:1 (xtdml_data.Rd:171): Warning: <h5> anchor "Usage" already defined
xtdml_data.html:254:1 (xtdml_data.Rd:175): Warning: <h5> anchor "Arguments" already defined
xtdml_plr.html:207:1 (xtdml_plr.Rd:231): Warning: <h5> anchor "Usage" already defined
xtdml_plr.html:218:1 (xtdml_plr.Rd:240): Warning: <h5> anchor "Arguments" already defined
xtdml_plr.html:271:1 (xtdml_plr.Rd:279): Warning: <h5> anchor "Usage" already defined
xtdml_plr.html:283:1 (xtdml_plr.Rd:289): Warning: <h5> anchor "Arguments" already defined
xtdml_plr.html:354:1 (xtdml_plr.Rd:341): Warning: <h5> anchor "Returns" already defined
xtdml_plr.html:422:1 (xtdml_plr.Rd:400): Warning: <h5> anchor "Usage" already defined
xtdml_plr.html:428:1 (xtdml_plr.Rd:404): Warning: <h5> anchor "Arguments" already defined