I noticed that mdimport has gained a few new options that refer to "modern importers":  -e            Print all the modern importers available  -m            Import files using modern importers. Specify the file type via -y and then the file url(s) via -u (separated by space)   -y type       Type of the file. Requires -m  -u urls       URLs for the files. Requires -m mdimport -e replies with: Extensions: id(501)  I can't figure out what "modern importers" are.