Trims options out of CCK select boxes.
The 2.3 version for D6 works with the following field types (all select widgets):
Number (integer, float, decimal)
This module can be used for a few different reasons:
1. You are using a reference field such as node_reference, user_reference, or role_reference and have options that you'd like to trim out of the list, but don't want to write a custom module to form alter out those options or use the views feature for populating the list.
The 2.0 branch adds a couple other use cases.