The difference between V"++++" and S"++++" is that the S" specifically constructs a Signature concrete type, while the V" is for automatically selecting an appr

The difference between V"++++" and S"++++" is that the S" specifically constructs a Signature concrete type, while the V" is for automatically selecting an appropriate type of the VectorBundle category, which is not limited to Signature specifically, making it a more general constructor call.