Display a Marker Icon
You can display icons that indicate the presence of hidden attributes in the worksheet such as Document block boundaries, execution groups marked for autoexecute, annotations, bookmarks, and numeric formatting.
To turn on the marker feature:
From the View menu, select Markers. A vertical bar is displayed along the left pane of the worksheet. Icons for hidden elements are displayed in the vertical bar next to the associated text in the worksheet.
Annotations, Autoexecute, Bookmarks, Document Blocks, Numeric Formatting
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