Subparameter definition

KEEP

Specifies that the file should be kept:

When the step ends normally, KEEP is the first subparameter.
When the step ends abnormally, KEEP is the second subparameter.

DELETE

Specifies that the file should be deleted:

When the step ends normally, DELETE is the first subparameter.
When the step ends abnormally, DELETE is the second subparameter.

Deleting a file deletes the name for the file. If the file has other names created by link() functions, DELETE does not delete the file itself. The file persists until all of its names are deleted.