Found the following HTML validation problems:
AnnData.html:421:1 (AnnData.Rd:642): Warning: <h5> anchor "Usage" already defined
AnnData.html:427:1 (AnnData.Rd:646): Warning: <h5> anchor "Examples" already defined
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AnnData.html:544:1 (AnnData.Rd:736): Warning: <h5> anchor "Examples" already defined
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AnnData.html:579:1 (AnnData.Rd:764): Warning: <h5> anchor "Arguments" already defined
AnnData.html:592:1 (AnnData.Rd:771): Warning: <h5> anchor "Examples" already defined
AnnData.html:619:1 (AnnData.Rd:793): Warning: <h5> anchor "Usage" already defined
AnnData.html:625:1 (AnnData.Rd:797): Warning: <h5> anchor "Examples" already defined
AnnData.html:655:1 (AnnData.Rd:822): Warning: <h5> anchor "Usage" already defined
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AnnData.html:1362:1 (AnnData.Rd:1344): Warning: <h5> anchor "Usage" already defined
Layers.html:136:1 (Layers.Rd:97): Warning: <h5> anchor "Usage" already defined
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Raw.html:151:1 (Raw.Rd:179): Warning: <h5> anchor "Usage" already defined
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Raw.html:332:1 (Raw.Rd:315): Warning: <h5> anchor "Usage" already defined
all.equal.html:62:1 (all.equal.Rd:22): Warning: missing </ul> before </div>