Example
With “Ignore upper/lower case” on
Before
apples bananas Apples cherries bananas
After
apples bananas cherries
Typical uses
Cleaning email lists, keyword lists, SKUs, and log files, or merging two lists without double entries. Paste both lists together and remove the duplicates in one pass.
Order is kept
The first time a line appears it stays where it is, and later copies are removed. To put the result in order as well, use Sort alphabetically.