The OpenDocMan User Defined Fields (UDF) feature provides a way of adding custom meta information to your files.
For example, lets say you wanted to categorize each of your files into a color. You would create a new UDF (Select List, Text Field, Radio, Sub-select) which would contain a list of all the colors you want to be able to choose from. Once you create the UDF your new option will appear on the Add File and Edit File forms.
Posted in: Usage