The Key Attributes Summary screen displays the following attributes:-
KEY SIZE
KEY DATA SIZE
ADDITIONAL CONTROL WORDS
KEY ENTRY SIZE IN WORDS
KEY ITEMS
WASTED SPACE PER KEY IN BITS *
DUPLICATES RESOLVER
RSN
DATA IN KEY
* If you do not 'Add Data Items on Load' the Bits Waste Per Entry is not calculated and set to 0 bits. Any derived wastage reflects this value and will reduce the indicated amount of waste accordingly.