find - * vs omit ==
I am having trouble understanding the difference between of using * and Omit == in Find.
* 0 or more unknown characters
== Match entire field
It seems to me that both Find * should show all records, but as it does not, I have presumed that it shows all records with nonempty values in the field searched. This would be the same as Find Omit ==. However, the two finds do not give the same results. I would like to know the exact meaning of find *
Ex. #1: In a particular text field, Find * yields 789 records while Find Omit == yields 794.
Ex. #2: In a particular calculation field, Find * yields 644 records while Find Omit == yields All records.