Markers can be deleted in one of the following ways:

 

•To delete a marker directly from a plot, click anywhere on the marker to select it. When the marker is selected, three points will appear:  a resizing handle at the left- and right-boundaries, and a point in the center for moving the marker. Press the Delete key on the keyboard or select the Home→Editing→Delete command.

 

•With the plot containing the marker you want to delete in selected or edit mode, use the Format→1D Options→Markers command. This brings up a Formatting Markers dialog. In the Marker list box, highlight the marker(s) you want to delete. Click on the Remove button. Click OK.

 

•Right-click on the plot containing the marker and select Format from the pop-up menu. Choose the Markers category in the formatting dialog. Highlight the marker(s) you want to delete in the list box. Click on the Remove button. Click OK.