Parent type/Child type
When you are on the Edit screen, you can set the parent type by picking Find from the top menu and pick "Show parent type" from the drop down menu. You can specify that the parents of this child are not the natural birth parents. You may indicate that the mother and father are:
Natural
Adoptive
Step
Foster
Other
If the parents are not the natural birth parents, then the word Father and Mother will be in italics on the Edit screen.