How it works
This function deletes tickmarks from the selected cells.
Note: This function is only available for Image tickmark types.
How to delete tickmarks:

Step 1
Select the cells containing the tickmarks to be deleted.

Step 2
In the more drop-down in the Ticking and Bashing group, click on Delete Selection.
A new pop-up window will be displayed.

Step 3
In the pop-up window, click OK to confirm the delete.
On completion, the tickmarks in the selection will be removed.