Bookmarks are used to show the structure of a report. Also, bookmarks are used to mark the component to refer to it using hyperlinks. All components have the Interaction.Bookmark property. The expression, specified in this property, is set in the BookmarkValue property. Setting occurs when the report is rendering. This property is invisible in the Properties panel, but it can be called from the report code or refer to it from the expression. Before showing a report in the window of preview, Stimulsoft Reports views all components of a rendered report and logs a tree of bookmarks.