Potentially partially restricted to supporting load.(filenames)

[stemann]

The implementation seems partially restricted to loader functions for strings - the array data could also hide in e.g. an Int-indexed database...

[stemann]

(also quite hard to decipher what type parameter NF refers to F is the function type of the loader... and NF is something with the number of dimensions of the input array ... which it makes sense can have > 1 dimension... probably just the name that's cryptic...)