TRichView Reference | Item Types | Sidenote | BoxProperties
Allows anchoring a text box to a table cell.
property RelativeToCell: Boolean;
If True, and a sidenote (or a text box item) is placed in a table cell, then horizontal and vertical positions are calculated relative to this cell (instead of a page).
Use TRichViewEdit.SetCurrentItemExtraIntPropertyEx and SetCurrentItemExtraStrPropertyEx to change value of this property as an editing operation.
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