<RowHidden> (Comment's Row is Hidden)

This element specifies that the row of the cell to which this comment points is hidden. If this element is specified without a value, it is assumed to be true. This element is used for comments.

example: 
<x:ClientData … > …
  <x:RowHidden>True</x:RowHidden>
</x:ClientData>

The possible values for this element are defined by the ST_TrueFalseBlank simple type (§6.4.3.3).

Parent Elements

<ClientData> (§6.4.2.12)