empty MARC fields with FAST IDs

[jodiw01]

Some (but not all) FAST ID fields are placed in empty MARC fields by bibframe2marc.

Examples:
001 20940740
https://id.loc.gov/resources/works/20940740.html
\7$2fast$0http://id.worldcat.org/fast/1180924
ID for "World War (1939-1945)"

This record also contains FAST headings in 6XX fields:
648 \7$a1900-1999$2fast
655 \7$aClaims$2fast
655 \7$aHistory$2fast

001 23379920
https://id.loc.gov/resources/works/23379920.html
\7$2fast$0http://id.worldcat.org/fast/1180924
ID for "World War (1939-1945)"
\7$2fast$0http://id.worldcat.org/fast/1907431
ID for "Axis Occupation of Slovenia (Slovenia : 1941-1945)

This record also contains FAST headings in 6XX fields:
650 \7$aNational socialism$2fast
651 \7$aSlovenia$zRogaška Slatina$2fast
648 \7$a1941-1945.$2fast
655 \7$aHistory$2fast