Filtering is a quick and easy way to find and work with a subset of entries in a list, document library, or discussion board. A filtered list displays only the rows that meet the criteria you specify for a column. Unlike sorting, filtering does not rearrange the items. Filtering hides rows you do not want displayed.

You can filter items in two different ways:
By applying a
filter to the current view
By defining a view that displays
filtered items, and then selecting that view