006 - FIXED-LENGTH DATA ELEMENTS--ADDITIONAL MATERIAL
This field has no indicators or subfield codes.
It contains 18 characters that provide for coding information
about special aspects of the item being cataloged that cannot
be coded in field 008 (Fixed-Length Data Elements).
The code given in position 00 (Form of material) determines the
data elements defined for subsequent character positions.
The 006 can be edited using the form available for this field.
After choosing a form of material the "Help on field" button
provides a guide to the use of the field.