Hi i just to know the understanding of the following fields in relation with item matsre in LN

Environmental Compliance
Option Set
Multiple Change Orders Allowed
Effectivity Dates by Change Order
Change Management Allowed
Effective Date
Change order
Purchase Schedule in Use
Scheduled Type
Serialized (tcibd001.seri)
Unit Effective Supply
Interchangeable (tcuef001.ichg)
Unit Effective End Item
Cost Component
STO Item
Derived-from Item
Product Variant
Type of Replacement
Project (tcmcs052.cprj)
Container
Container Item
EAN Code
Commodity Code (tcmcs028.ccde)
Product Line (tcmcs061.cpln)
Update Method E-Item Relation
Revision Controlled
Product Class (tcmcs062.cpcl)

Item Signal (tcmcs018.csig)