With this feature...
Do this...
stratigraphy object
Select the formation top with which to work.
remove
(Available in Project mode)
Click to remove the formation top selected in the stratigraphy object list above.
rename
(Available in Project mode)
Click to display the Rename Tops dialog box and change the name of the formation top selected in the stratigraphy object list above.
NorAmStrat Dominant Litho/Pastels
Select colors from the North American Stratigraphic
palette or from a custom palette that appear when you select domin
litho (
).
top line weight 
color
Type or select line display properties.
top name font size color
Type or select line name display properties.
contact type
Select either Conformity to display a straight line, or Unconformity to display an eroded line.
remove all
(Available in Project mode)
Click to remove all formation tops that appear in the stratigraphy object list.
remove ranked
(Available in Project mode)
Click to display the Delete
Ranked Tops dialog box.