Wildcards are special characters you can substitute for other characters. Using wildcards allows you to search for items that contain a particular set of characters.
You can use different combinations of wildcards to search, e.g. ?OU* will search for values with three or more characters which have OU as the second and third characters.
If you enter a value in both boxes, both must be found for the BOM record to be displayed in the list.
For example, if you enter ?OU* in the Reference box and *Pack* in the Description box, BOM records are only displayed where the Reference has OU as the second and third characters of the code and the word Pack is used in the Description.