Found the following HTML validation problems:
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FastRGF_Classifier.html:219:1 (FastRGF_Classifier.Rd:204): Warning: <h5> anchor "Usage" already defined
FastRGF_Classifier.html:225:1 (FastRGF_Classifier.Rd:208): Warning: <h5> anchor "Arguments" already defined
FastRGF_Regressor.html:91:1 (FastRGF_Regressor.Rd:100): Warning: <h3> anchor "Methods" already defined
FastRGF_Regressor.html:207:1 (FastRGF_Regressor.Rd:190): Warning: <h5> anchor "Usage" already defined
FastRGF_Regressor.html:213:1 (FastRGF_Regressor.Rd:194): Warning: <h5> anchor "Arguments" already defined
Internal_class.html:229:1 (Internal_class.Rd:124): Warning: missing </ul> before </div>
Internal_class.html:92:1 (Internal_class.Rd:40): Warning: <h5> anchor "Usage" already defined
Internal_class.html:106:1 (Internal_class.Rd:49): Warning: <h5> anchor "Usage" already defined
Internal_class.html:120:1 (Internal_class.Rd:58): Warning: <h5> anchor "Usage" already defined
Internal_class.html:134:1 (Internal_class.Rd:67): Warning: <h5> anchor "Usage" already defined
Internal_class.html:148:1 (Internal_class.Rd:76): Warning: <h5> anchor "Usage" already defined
Internal_class.html:162:1 (Internal_class.Rd:85): Warning: <h5> anchor "Usage" already defined
Internal_class.html:176:1 (Internal_class.Rd:94): Warning: <h5> anchor "Usage" already defined
Internal_class.html:190:1 (Internal_class.Rd:103): Warning: <h5> anchor "Usage" already defined
Internal_class.html:206:1 (Internal_class.Rd:113): Warning: <h5> anchor "Usage" already defined
RGF_Classifier.html:105:1 (RGF_Classifier.Rd:122): Warning: <h3> anchor "Methods" already defined
RGF_Classifier.html:227:1 (RGF_Classifier.Rd:218): Warning: <h5> anchor "Usage" already defined
RGF_Classifier.html:233:1 (RGF_Classifier.Rd:222): Warning: <h5> anchor "Arguments" already defined
RGF_Regressor.html:99:1 (RGF_Regressor.Rd:114): Warning: <h3> anchor "Methods" already defined
RGF_Regressor.html:215:1 (RGF_Regressor.Rd:204): Warning: <h5> anchor "Usage" already defined
RGF_Regressor.html:221:1 (RGF_Regressor.Rd:208): Warning: <h5> anchor "Arguments" already defined